diff --git a/app/scripts/keyring-controller.js b/app/scripts/keyring-controller.js
index a4bee8ae1..68fc6e882 100644
--- a/app/scripts/keyring-controller.js
+++ b/app/scripts/keyring-controller.js
@@ -1,12 +1,14 @@
 const ethUtil = require('ethereumjs-util')
+const BN = ethUtil.BN
 const bip39 = require('bip39')
 const EventEmitter = require('events').EventEmitter
+const ObservableStore = require('obs-store')
 const filter = require('promise-filter')
 const encryptor = require('browser-passworder')
-
-const normalize = require('./lib/sig-util').normalize
+const createId = require('./lib/random-id')
+const normalizeAddress = require('./lib/sig-util').normalize
 const messageManager = require('./lib/message-manager')
-const BN = ethUtil.BN
+function noop () {}
 
 // Keyrings:
 const SimpleKeyring = require('./keyrings/simple')
@@ -16,9 +18,8 @@ const keyringTypes = [
   HdKeyring,
 ]
 
-const createId = require('./lib/random-id')
 
-module.exports = class KeyringController extends EventEmitter {
+class KeyringController extends EventEmitter {
 
   // PUBLIC METHODS
   //
@@ -29,6 +30,8 @@ module.exports = class KeyringController extends EventEmitter {
 
   constructor (opts) {
     super()
+    const initState = opts.initState || {}
+    this.store = new ObservableStore(initState)
     this.configManager = opts.configManager
     this.ethStore = opts.ethStore
     this.encryptor = encryptor
@@ -71,29 +74,31 @@ module.exports = class KeyringController extends EventEmitter {
   // in this class, but will need to be Promisified when we move our
   // persistence to an async model.
   getState () {
-    const configManager = this.configManager
-    const address = configManager.getSelectedAccount()
-    const wallet = configManager.getWallet() // old style vault
-    const vault = configManager.getVault() // new style vault
-    const keyrings = this.keyrings
-
-    return Promise.all(keyrings.map(this.displayForKeyring))
+    return Promise.all(this.keyrings.map(this.displayForKeyring))
     .then((displayKeyrings) => {
+      const state = this.store.getState()
+      // old wallet
+      const wallet = this.configManager.getWallet()
       return {
+        // computed
+        isInitialized: (!!wallet || !!state.vault),
+        isUnlocked: (!!this.password),
+        keyrings: displayKeyrings,
+        // hard coded
+        keyringTypes: this.keyringTypes.map(krt => krt.type),
+        // memStore
+        identities: this.identities,
+        // diskStore
+        selectedAccount: state.selectedAccount,
+        // configManager
         seedWords: this.configManager.getSeedWords(),
-        isInitialized: (!!wallet || !!vault),
-        isUnlocked: Boolean(this.password),
         isDisclaimerConfirmed: this.configManager.getConfirmedDisclaimer(),
-        unconfMsgs: messageManager.unconfirmedMsgs(),
-        messages: messageManager.getMsgList(),
-        selectedAccount: address,
-        shapeShiftTxList: this.configManager.getShapeShiftTxList(),
         currentFiat: this.configManager.getCurrentFiat(),
         conversionRate: this.configManager.getConversionRate(),
         conversionDate: this.configManager.getConversionDate(),
-        keyringTypes: this.keyringTypes.map(krt => krt.type),
-        identities: this.identities,
-        keyrings: displayKeyrings,
+        // messageManager
+        unconfMsgs: messageManager.unconfirmedMsgs(),
+        messages: messageManager.getMsgList(),
       }
     })
   }
@@ -146,8 +151,8 @@ module.exports = class KeyringController extends EventEmitter {
     .then((accounts) => {
       const firstAccount = accounts[0]
       if (!firstAccount) throw new Error('KeyringController - First Account not found.')
-      const hexAccount = normalize(firstAccount)
-      this.configManager.setSelectedAccount(hexAccount)
+      const hexAccount = normalizeAddress(firstAccount)
+      this.setSelectedAccount(hexAccount)
       return this.setupAccounts(accounts)
     })
     .then(this.persistAllKeyrings.bind(this, password))
@@ -233,9 +238,9 @@ module.exports = class KeyringController extends EventEmitter {
   //
   // Sets the state's `selectedAccount` value
   // to the specified address.
-  setSelectedAccount (address) {
-    var addr = normalize(address)
-    this.configManager.setSelectedAccount(addr)
+  setSelectedAccount (account) {
+    var address = normalizeAddress(account)
+    this.store.updateState({ selectedAccount: address })
     return this.fullUpdate()
   }
 
@@ -247,11 +252,19 @@ module.exports = class KeyringController extends EventEmitter {
   //
   // Persists a nickname equal to `label` for the specified account.
   saveAccountLabel (account, label) {
-    const address = normalize(account)
-    const configManager = this.configManager
-    configManager.setNicknameForWallet(address, label)
-    this.identities[address].name = label
-    return Promise.resolve(label)
+    try {
+      const hexAddress = normalizeAddress(account)
+      // update state on diskStore
+      const state = this.store.getState()
+      const walletNicknames = state.walletNicknames || {}
+      walletNicknames[hexAddress] = label
+      this.store.updateState({ walletNicknames })
+      // update state on memStore
+      this.identities[hexAddress].name = label
+      return Promise.resolve(label)
+    } catch (err) {
+      return Promise.reject(err)
+    }
   }
 
   // Export Account
@@ -267,7 +280,7 @@ module.exports = class KeyringController extends EventEmitter {
     try {
       return this.getKeyringForAccount(address)
       .then((keyring) => {
-        return keyring.exportAccount(normalize(address))
+        return keyring.exportAccount(normalizeAddress(address))
       })
     } catch (e) {
       return Promise.reject(e)
@@ -281,7 +294,7 @@ module.exports = class KeyringController extends EventEmitter {
   // TX Manager to update the state after signing
 
   signTransaction (ethTx, _fromAddress) {
-    const fromAddress = normalize(_fromAddress)
+    const fromAddress = normalizeAddress(_fromAddress)
     return this.getKeyringForAccount(fromAddress)
     .then((keyring) => {
       return keyring.signTransaction(fromAddress, ethTx)
@@ -354,7 +367,7 @@ module.exports = class KeyringController extends EventEmitter {
       delete msgParams.metamaskId
       const approvalCb = this._unconfMsgCbs[msgId] || noop
 
-      const address = normalize(msgParams.from)
+      const address = normalizeAddress(msgParams.from)
       return this.getKeyringForAccount(address)
       .then((keyring) => {
         return keyring.signMessage(address, msgParams.data)
@@ -392,8 +405,8 @@ module.exports = class KeyringController extends EventEmitter {
     .then((accounts) => {
       const firstAccount = accounts[0]
       if (!firstAccount) throw new Error('KeyringController - No account found on keychain.')
-      const hexAccount = normalize(firstAccount)
-      this.configManager.setSelectedAccount(hexAccount)
+      const hexAccount = normalizeAddress(firstAccount)
+      this.setSelectedAccount(hexAccount)
       this.emit('newAccount', hexAccount)
       return this.setupAccounts(accounts)
     })
@@ -429,7 +442,7 @@ module.exports = class KeyringController extends EventEmitter {
     if (!account) {
       throw new Error('Problem loading account.')
     }
-    const address = normalize(account)
+    const address = normalizeAddress(account)
     this.ethStore.addAccount(address)
     return this.createNickname(address)
   }
@@ -441,10 +454,11 @@ module.exports = class KeyringController extends EventEmitter {
   //
   // Takes an address, and assigns it an incremented nickname, persisting it.
   createNickname (address) {
-    const hexAddress = normalize(address)
-    var i = Object.keys(this.identities).length
-    const oldNickname = this.configManager.nicknameForWallet(address)
-    const name = oldNickname || `Account ${++i}`
+    const hexAddress = normalizeAddress(address)
+    const currentIdentityCount = Object.keys(this.identities).length + 1
+    const nicknames = this.store.getState().walletNicknames || {}
+    const existingNickname = nicknames[hexAddress]
+    const name = existingNickname || `Account ${currentIdentityCount}`
     this.identities[hexAddress] = {
       address: hexAddress,
       name,
@@ -479,7 +493,7 @@ module.exports = class KeyringController extends EventEmitter {
       return this.encryptor.encrypt(this.password, serializedKeyrings)
     })
     .then((encryptedString) => {
-      this.configManager.setVault(encryptedString)
+      this.store.updateState({ vault: encryptedString })
       return true
     })
   }
@@ -492,7 +506,7 @@ module.exports = class KeyringController extends EventEmitter {
   // Attempts to unlock the persisted encrypted storage,
   // initializing the persisted keyrings to RAM.
   unlockKeyrings (password) {
-    const encryptedVault = this.configManager.getVault()
+    const encryptedVault = this.store.getState().vault
     if (!encryptedVault) {
       throw new Error('Cannot unlock without a previous vault.')
     }
@@ -572,7 +586,7 @@ module.exports = class KeyringController extends EventEmitter {
   // Returns the currently initialized keyring that manages
   // the specified `address` if one exists.
   getKeyringForAccount (address) {
-    const hexed = normalize(address)
+    const hexed = normalizeAddress(address)
 
     return Promise.all(this.keyrings.map((keyring) => {
       return Promise.all([
@@ -581,7 +595,7 @@ module.exports = class KeyringController extends EventEmitter {
       ])
     }))
     .then(filter((candidate) => {
-      const accounts = candidate[1].map(normalize)
+      const accounts = candidate[1].map(normalizeAddress)
       return accounts.includes(hexed)
     }))
     .then((winners) => {
@@ -639,10 +653,9 @@ module.exports = class KeyringController extends EventEmitter {
 
     this.keyrings = []
     this.identities = {}
-    this.configManager.setSelectedAccount()
+    this.setSelectedAccount()
   }
 
 }
 
-
-function noop () {}
+module.exports = KeyringController
diff --git a/app/scripts/lib/config-manager.js b/app/scripts/lib/config-manager.js
index fd4ac511a..357e081b1 100644
--- a/app/scripts/lib/config-manager.js
+++ b/app/scripts/lib/config-manager.js
@@ -29,15 +29,7 @@ ConfigManager.prototype.setConfig = function (config) {
 
 ConfigManager.prototype.getConfig = function () {
   var data = this.getData()
-  if ('config' in data) {
-    return data.config
-  } else {
-    return {
-      provider: {
-        type: 'testnet',
-      },
-    }
-  }
+  return data.config
 }
 
 ConfigManager.prototype.setRpcTarget = function (rpcUrl) {
diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index 3ce9c2373..cf58d2477 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -29,9 +29,10 @@ module.exports = class MetamaskController extends EventEmitter {
     super()
     this.opts = opts
     this.state = { network: 'loading' }
+    let initState = opts.initState || {}
 
     // observable state store
-    this.store = new ObservableStore(opts.initState)
+    this.store = new ObservableStore(initState)
     
     // config manager
     this.configManager = new ConfigManager({
@@ -41,7 +42,7 @@ module.exports = class MetamaskController extends EventEmitter {
 
     // rpc provider
     this.provider = this.initializeProvider(opts)
-    this.provider.on('block', this.processBlock.bind(this))
+    this.provider.on('block', this.logBlock.bind(this))
     this.provider.on('error', this.getNetwork.bind(this))
 
     // eth data query tools
@@ -50,6 +51,7 @@ module.exports = class MetamaskController extends EventEmitter {
     
     // key mgmt
     this.keyringController = new KeyringController({
+      initState: initState.KeyringController,
       ethStore: this.ethStore,
       configManager: this.configManager,
       getNetwork: this.getStateNetwork.bind(this),
@@ -96,6 +98,9 @@ module.exports = class MetamaskController extends EventEmitter {
     this.ethStore.on('update', this.sendUpdate.bind(this))
     this.keyringController.on('update', this.sendUpdate.bind(this))
     this.txManager.on('update', this.sendUpdate.bind(this))
+    this.keyringController.store.subscribe((state) => {
+      this.store.updateState({ KeyringController: state })
+    })
   }
 
   //
@@ -142,9 +147,7 @@ module.exports = class MetamaskController extends EventEmitter {
       const result = { selectedAccount: undefined }
       try {
         result.selectedAccount = state.config.selectedAccount
-      } catch (_) {
-        // thats fine, im sure it will be there next time...
-      }
+      } catch (_) {}
       return result
     }
 
@@ -164,7 +167,9 @@ module.exports = class MetamaskController extends EventEmitter {
         this.configManager.getConfig(),
         this.txManager.getState(),
         keyringControllerState,
-        this.noticeController.getState(), {
+        this.noticeController.getState(),
+        {
+          shapeShiftTxList: this.configManager.getShapeShiftTxList(),
           lostAccounts: this.configManager.getLostAccounts(),
         }
       )
@@ -269,6 +274,13 @@ module.exports = class MetamaskController extends EventEmitter {
     }
   }
 
+  setupPublicConfig (outStream) {
+    pipe(
+      this.publicConfigStore,
+      outStream
+    )
+  }
+
   sendUpdate () {
     this.getState()
     .then((state) => {
@@ -374,31 +386,90 @@ module.exports = class MetamaskController extends EventEmitter {
     this.opts.showUnconfirmedMessage(msgParams, msgId)
   }
 
-  setupPublicConfig (outStream) {
-    pipe(
-      this.publicConfigStore,
-      outStream
-    )
+
+  markAccountsFound (cb) {
+    this.configManager.setLostAccounts([])
+    this.sendUpdate()
+    cb(null, this.getState())
   }
 
-  // Log blocks
-  processBlock (block) {
-    if (global.METAMASK_DEBUG) {
-      console.log(`BLOCK CHANGED: #${block.number.toString('hex')} 0x${block.hash.toString('hex')}`)
+  // Migrate Old Vault If Any
+  // @string password
+  //
+  // returns Promise()
+  //
+  // Temporary step used when logging in.
+  // Checks if old style (pre-3.0.0) Metamask Vault exists.
+  // If so, persists that vault in the new vault format
+  // with the provided password, so the other unlock steps
+  // may be completed without interruption.
+  migrateOldVaultIfAny (password) {
+
+    if (!this.checkIfShouldMigrate()) {
+      return Promise.resolve(password)
     }
-    this.verifyNetwork()
+
+    const keyringController = this.keyringController
+
+    return this.idStoreMigrator.migratedVaultForPassword(password)
+    .then(this.restoreOldVaultAccounts.bind(this))
+    .then(this.restoreOldLostAccounts.bind(this))
+    .then(keyringController.persistAllKeyrings.bind(keyringController, password))
+    .then(() => password)
   }
 
-  verifyNetwork () {
-    // Check network when restoring connectivity:
-    if (this.state.network === 'loading') {
-      this.getNetwork()
+  checkIfShouldMigrate() {
+    return !!this.configManager.getWallet() && !this.configManager.getVault()
+  }
+
+  restoreOldVaultAccounts(migratorOutput) {
+    const { serialized } = migratorOutput
+    return this.keyringController.restoreKeyring(serialized)
+    .then(() => migratorOutput)
+  }
+
+  restoreOldLostAccounts(migratorOutput) {
+    const { lostAccounts } = migratorOutput
+    if (lostAccounts) {
+      this.configManager.setLostAccounts(lostAccounts.map(acct => acct.address))
+      return this.importLostAccounts(migratorOutput)
     }
+    return Promise.resolve(migratorOutput)
   }
 
-  // config
+  // IMPORT LOST ACCOUNTS
+  // @Object with key lostAccounts: @Array accounts <{ address, privateKey }>
+  // Uses the array's private keys to create a new Simple Key Pair keychain
+  // and add it to the keyring controller.
+  importLostAccounts ({ lostAccounts }) {
+    const privKeys = lostAccounts.map(acct => acct.privateKey)
+    return this.keyringController.restoreKeyring({
+      type: 'Simple Key Pair',
+      data: privKeys,
+    })
+  }
+
+  //
+  // disclaimer
   //
 
+  agreeToDisclaimer (cb) {
+    try {
+      this.configManager.setConfirmedDisclaimer(true)
+      cb()
+    } catch (err) {
+      cb(err)
+    }
+  }
+
+  resetDisclaimer () {
+    try {
+      this.configManager.setConfirmedDisclaimer(false)
+    } catch (e) {
+      console.error(e)
+    }
+  }
+
   setTOSHash (hash) {
     try {
       this.configManager.setTOSHash(hash)
@@ -419,23 +490,16 @@ module.exports = class MetamaskController extends EventEmitter {
     }
   }
 
-  // disclaimer
-
-  agreeToDisclaimer (cb) {
-    try {
-      this.configManager.setConfirmedDisclaimer(true)
-      cb()
-    } catch (err) {
-      cb(err)
-    }
-  }
+  //
+  // config
+  //
 
-  resetDisclaimer () {
-    try {
-      this.configManager.setConfirmedDisclaimer(false)
-    } catch (e) {
-      console.error(e)
+  // Log blocks
+  logBlock (block) {
+    if (global.METAMASK_DEBUG) {
+      console.log(`BLOCK CHANGED: #${block.number.toString('hex')} 0x${block.hash.toString('hex')}`)
     }
+    this.verifyNetwork()
   }
 
   setCurrentFiat (fiat, cb) {
@@ -463,24 +527,6 @@ module.exports = class MetamaskController extends EventEmitter {
     }, 300000)
   }
 
-  // called from popup
-  setRpcTarget (rpcTarget) {
-    this.configManager.setRpcTarget(rpcTarget)
-    extension.runtime.reload()
-    this.getNetwork()
-  }
-
-  setProviderType (type) {
-    this.configManager.setProviderType(type)
-    extension.runtime.reload()
-    this.getNetwork()
-  }
-
-  useEtherscanProvider () {
-    this.configManager.useEtherscanProvider()
-    extension.runtime.reload()
-  }
-
   buyEth (address, amount) {
     if (!amount) amount = '5'
 
@@ -500,25 +546,6 @@ module.exports = class MetamaskController extends EventEmitter {
     this.configManager.createShapeShiftTx(depositAddress, depositType)
   }
 
-  getNetwork (err) {
-    if (err) {
-      this.state.network = 'loading'
-      this.sendUpdate()
-    }
-
-    this.ethQuery.sendAsync({ method: 'net_version' }, (err, network) => {
-      if (err) {
-        this.state.network = 'loading'
-        return this.sendUpdate()
-      }
-      if (global.METAMASK_DEBUG) {
-        console.log('web3.getNetwork returned ' + network)
-      }
-      this.state.network = network
-      this.sendUpdate()
-    })
-  }
-
   setGasMultiplier (gasMultiplier, cb) {
     try {
       this.configManager.setGasMultiplier(gasMultiplier)
@@ -528,69 +555,55 @@ module.exports = class MetamaskController extends EventEmitter {
     }
   }
 
-  getStateNetwork () {
-    return this.state.network
-  }
-
-  markAccountsFound (cb) {
-    this.configManager.setLostAccounts([])
-    this.sendUpdate()
-    cb(null, this.getState())
-  }
-
-  // Migrate Old Vault If Any
-  // @string password
   //
-  // returns Promise()
+  // network
   //
-  // Temporary step used when logging in.
-  // Checks if old style (pre-3.0.0) Metamask Vault exists.
-  // If so, persists that vault in the new vault format
-  // with the provided password, so the other unlock steps
-  // may be completed without interruption.
-  migrateOldVaultIfAny (password) {
 
-    if (!this.checkIfShouldMigrate()) {
-      return Promise.resolve(password)
+  verifyNetwork () {
+    // Check network when restoring connectivity:
+    if (this.state.network === 'loading') {
+      this.getNetwork()
     }
+  }
 
-    const keyringController = this.keyringController
+  setRpcTarget (rpcTarget) {
+    this.configManager.setRpcTarget(rpcTarget)
+    extension.runtime.reload()
+    this.getNetwork()
+  }
 
-    return this.idStoreMigrator.migratedVaultForPassword(password)
-    .then(this.restoreOldVaultAccounts.bind(this))
-    .then(this.restoreOldLostAccounts.bind(this))
-    .then(keyringController.persistAllKeyrings.bind(keyringController, password))
-    .then(() => password)
+  setProviderType (type) {
+    this.configManager.setProviderType(type)
+    extension.runtime.reload()
+    this.getNetwork()
   }
 
-  checkIfShouldMigrate() {
-    return !!this.configManager.getWallet() && !this.configManager.getVault()
+  useEtherscanProvider () {
+    this.configManager.useEtherscanProvider()
+    extension.runtime.reload()
   }
 
-  restoreOldVaultAccounts(migratorOutput) {
-    const { serialized } = migratorOutput
-    return this.keyringController.restoreKeyring(serialized)
-    .then(() => migratorOutput)
+  getStateNetwork () {
+    return this.state.network
   }
 
-  restoreOldLostAccounts(migratorOutput) {
-    const { lostAccounts } = migratorOutput
-    if (lostAccounts) {
-      this.configManager.setLostAccounts(lostAccounts.map(acct => acct.address))
-      return this.importLostAccounts(migratorOutput)
+  getNetwork (err) {
+    if (err) {
+      this.state.network = 'loading'
+      this.sendUpdate()
     }
-    return Promise.resolve(migratorOutput)
-  }
 
-  // IMPORT LOST ACCOUNTS
-  // @Object with key lostAccounts: @Array accounts <{ address, privateKey }>
-  // Uses the array's private keys to create a new Simple Key Pair keychain
-  // and add it to the keyring controller.
-  importLostAccounts ({ lostAccounts }) {
-    const privKeys = lostAccounts.map(acct => acct.privateKey)
-    return this.keyringController.restoreKeyring({
-      type: 'Simple Key Pair',
-      data: privKeys,
+    this.ethQuery.sendAsync({ method: 'net_version' }, (err, network) => {
+      if (err) {
+        this.state.network = 'loading'
+        return this.sendUpdate()
+      }
+      if (global.METAMASK_DEBUG) {
+        console.log('web3.getNetwork returned ' + network)
+      }
+      this.state.network = network
+      this.sendUpdate()
     })
   }
+
 }
diff --git a/app/scripts/migrations/005.js b/app/scripts/migrations/005.js
new file mode 100644
index 000000000..65f62a861
--- /dev/null
+++ b/app/scripts/migrations/005.js
@@ -0,0 +1,41 @@
+const version = 5
+
+/*
+
+This migration moves state from the flat state trie into KeyringController substate
+
+*/
+
+const extend = require('xtend')
+
+module.exports = {
+  version,  
+
+  migrate: function (versionedData) {
+    versionedData.meta.version = version
+    try {
+      const state = versionedData.data
+      const newState = selectSubstateForKeyringController(state)
+      versionedData.data = newState
+    } catch (err) {
+      console.warn('MetaMask Migration #5' + err.stack)
+    }
+    return Promise.resolve(versionedData)
+  },
+}
+
+function selectSubstateForKeyringController (state) {
+  const config = state.config
+  const newState = extend(state, {
+    KeyringController: {
+      vault: state.vault,
+      selectedAccount: config.selectedAccount,
+      walletNicknames: state.walletNicknames,
+    },
+  })
+  delete newState.vault
+  delete newState.walletNicknames
+  delete newState.config.selectedAccount
+
+  return newState
+}
diff --git a/app/scripts/migrations/index.js b/app/scripts/migrations/index.js
index d2ac221b9..a7ce745e7 100644
--- a/app/scripts/migrations/index.js
+++ b/app/scripts/migrations/index.js
@@ -15,4 +15,5 @@ module.exports = [
   require('./002'),
   require('./003'),
   require('./004'),
+  require('./005'),
 ]
diff --git a/package.json b/package.json
index bf4b3986c..2a46ab6bd 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "mississippi": "^1.2.0",
     "mkdirp": "^0.5.1",
     "multiplex": "^6.7.0",
-    "obs-store": "^2.2.3",
+    "obs-store": "^2.3.0",
     "once": "^1.3.3",
     "ping-pong-stream": "^1.0.0",
     "pojo-migrator": "^2.1.0",
diff --git a/test/unit/idStore-migration-test.js b/test/unit/idStore-migration-test.js
index 38667fc3e..3aaf4bb94 100644
--- a/test/unit/idStore-migration-test.js
+++ b/test/unit/idStore-migration-test.js
@@ -4,12 +4,13 @@ const ObservableStore = require('obs-store')
 const ethUtil = require('ethereumjs-util')
 const BN = ethUtil.BN
 const ConfigManager = require('../../app/scripts/lib/config-manager')
+const firstTimeState = require('../../app/scripts/first-time-state')
 const delegateCallCode = require('../lib/example-code.json').delegateCallCode
+const clone = require('clone')
 
 // The old way:
 const IdentityStore = require('../../app/scripts/lib/idStore')
 const STORAGE_KEY = 'metamask-config'
-const extend = require('xtend')
 
 // The new ways:
 var KeyringController = require('../../app/scripts/keyring-controller')
@@ -42,12 +43,9 @@ describe('IdentityStore to KeyringController migration', function() {
   // and THEN create a new one, before we can run tests on it.
   beforeEach(function(done) {
     this.sinon = sinon.sandbox.create()
-    window.localStorage = {} // Hacking localStorage support into JSDom
-    let store = new ObservableStore(loadData())
-    store.subscribe(setData)
+    let store = new ObservableStore(clone(firstTimeState))
     configManager = new ConfigManager({ store })
 
-
     idStore = new IdentityStore({
       configManager: configManager,
       ethStore: {
@@ -91,56 +89,9 @@ describe('IdentityStore to KeyringController migration', function() {
         assert(!state.lostAccounts, 'no lost accounts')
         done()
       })
+      .catch((err) => {
+        done(err)
+      })
     })
   })
 })
-
-function loadData () {
-  var oldData = getOldStyleData()
-  var newData
-  try {
-    newData = JSON.parse(window.localStorage[STORAGE_KEY])
-  } catch (e) {}
-
-  var data = extend({
-    meta: {
-      version: 0,
-    },
-    data: {
-      config: {
-        provider: {
-          type: 'testnet',
-        },
-      },
-    },
-  }, oldData || null, newData || null)
-  return data
-}
-
-function setData (data) {
-  window.localStorage[STORAGE_KEY] = JSON.stringify(data)
-}
-
-function getOldStyleData () {
-  var config, wallet, seedWords
-
-  var result = {
-    meta: { version: 0 },
-    data: {},
-  }
-
-  try {
-    config = JSON.parse(window.localStorage['config'])
-    result.data.config = config
-  } catch (e) {}
-  try {
-    wallet = JSON.parse(window.localStorage['lightwallet'])
-    result.data.wallet = wallet
-  } catch (e) {}
-  try {
-    seedWords = window.localStorage['seedWords']
-    result.data.seedWords = seedWords
-  } catch (e) {}
-
-  return result
-}
diff --git a/test/unit/keyring-controller-test.js b/test/unit/keyring-controller-test.js
index d6d2db817..347aa2bdf 100644
--- a/test/unit/keyring-controller-test.js
+++ b/test/unit/keyring-controller-test.js
@@ -1,6 +1,6 @@
-var assert = require('assert')
-var KeyringController = require('../../app/scripts/keyring-controller')
-var configManagerGen = require('../lib/mock-config-manager')
+const assert = require('assert')
+const KeyringController = require('../../app/scripts/keyring-controller')
+const configManagerGen = require('../lib/mock-config-manager')
 const ethUtil = require('ethereumjs-util')
 const BN = ethUtil.BN
 const async = require('async')
@@ -55,17 +55,16 @@ describe('KeyringController', function() {
     this.timeout(10000)
 
     it('should set a vault on the configManager', function(done) {
-      keyringController.configManager.setVault(null)
-      assert(!keyringController.configManager.getVault(), 'no previous vault')
+      keyringController.store.updateState({ vault: null })
+      assert(!keyringController.store.getState().vault, 'no previous vault')
       keyringController.createNewVaultAndKeychain(password)
       .then(() => {
-        const vault = keyringController.configManager.getVault()
+        const vault = keyringController.store.getState().vault
         assert(vault, 'vault created')
         done()
       })
       .catch((reason) => {
-        assert.ifError(reason)
-        done()
+        done(reason)
       })
     })
   })
@@ -96,8 +95,7 @@ describe('KeyringController', function() {
         done()
       })
       .catch((reason) => {
-        assert.ifError(reason)
-        done()
+        done(reason)
       })
     })
   })
@@ -109,9 +107,6 @@ describe('KeyringController', function() {
       const identities = keyringController.identities
       const identity = identities[fakeAddress]
       assert.equal(identity.address, fakeAddress)
-
-      const nick = keyringController.configManager.nicknameForWallet(fakeAddress)
-      assert.equal(typeof nick, 'string')
     })
   })
 
@@ -122,34 +117,17 @@ describe('KeyringController', function() {
       keyringController.identities[ethUtil.addHexPrefix(account)] = {}
       keyringController.saveAccountLabel(account, nick)
       .then((label) => {
-        assert.equal(label, nick)
-        const persisted = keyringController.configManager.nicknameForWallet(account)
-        assert.equal(persisted, nick)
-        done()
-      })
-      .catch((reason) => {
-        assert.ifError(reason)
-        done()
-      })
-    })
-
-    this.timeout(10000)
-    it('retrieves the persisted nickname', function(done) {
-      const account = addresses[0]
-      var nick = 'Test nickname'
-      keyringController.configManager.setNicknameForWallet(account, nick)
-      keyringController.createNewVaultAndRestore(password, seedWords)
-      .then((state) => {
-
-        const identity = keyringController.identities['0x' + account]
-        assert.equal(identity.name, nick)
-
-        assert(accounts)
-        done()
+        try {
+          assert.equal(label, nick)
+          const persisted = keyringController.store.getState().walletNicknames[account]
+          assert.equal(persisted, nick)
+          done()
+        } catch (err) {
+          done()
+        }
       })
       .catch((reason) => {
-        assert.ifError(reason)
-        done()
+        done(reason)
       })
     })
   })
diff --git a/test/unit/metamask-controller-test.js b/test/unit/metamask-controller-test.js
index 24d9ddd67..78b9e9df7 100644
--- a/test/unit/metamask-controller-test.js
+++ b/test/unit/metamask-controller-test.js
@@ -1,7 +1,9 @@
-var assert = require('assert')
-var MetaMaskController = require('../../app/scripts/metamask-controller')
-var sinon = require('sinon')
-var extend = require('xtend')
+const assert = require('assert')
+const sinon = require('sinon')
+const clone = require('clone')
+const MetaMaskController = require('../../app/scripts/metamask-controller')
+const firstTimeState = require('../../app/scripts/first-time-state')
+
 const STORAGE_KEY = 'metamask-config'
 
 describe('MetaMaskController', function() {
@@ -11,15 +13,12 @@ describe('MetaMaskController', function() {
     unlockAccountMessage: noop,
     showUnapprovedTx: noop,
     // initial state
-    initState: loadData(),
+    initState: clone(firstTimeState),
   })
-  // setup state persistence
-  controller.store.subscribe(setData)
 
   beforeEach(function() {
     // sinon allows stubbing methods that are easily verified
     this.sinon = sinon.sandbox.create()
-    window.localStorage = {} // Hacking localStorage support into JSDom
   })
 
   afterEach(function() {
@@ -27,55 +26,4 @@ describe('MetaMaskController', function() {
     this.sinon.restore()
   })
 
-})
-
-
-function loadData () {
-  var oldData = getOldStyleData()
-  var newData
-  try {
-    newData = JSON.parse(window.localStorage[STORAGE_KEY])
-  } catch (e) {}
-
-  var data = extend({
-    meta: {
-      version: 0,
-    },
-    data: {
-      config: {
-        provider: {
-          type: 'testnet',
-        },
-      },
-    },
-  }, oldData || null, newData || null)
-  return data
-}
-
-function getOldStyleData () {
-  var config, wallet, seedWords
-
-  var result = {
-    meta: { version: 0 },
-    data: {},
-  }
-
-  try {
-    config = JSON.parse(window.localStorage['config'])
-    result.data.config = config
-  } catch (e) {}
-  try {
-    wallet = JSON.parse(window.localStorage['lightwallet'])
-    result.data.wallet = wallet
-  } catch (e) {}
-  try {
-    seedWords = window.localStorage['seedWords']
-    result.data.seedWords = seedWords
-  } catch (e) {}
-
-  return result
-}
-
-function setData (data) {
-  window.localStorage[STORAGE_KEY] = JSON.stringify(data)
-}
+})
\ No newline at end of file
diff --git a/ui/app/account-detail.js b/ui/app/account-detail.js
index 387a1720a..0bcfbcaab 100644
--- a/ui/app/account-detail.js
+++ b/ui/app/account-detail.js
@@ -41,6 +41,7 @@ function AccountDetailScreen () {
 AccountDetailScreen.prototype.render = function () {
   var props = this.props
   var selected = props.address || Object.keys(props.accounts)[0]
+  var checksumAddress = selected && ethUtil.toChecksumAddress(selected)
   var identity = props.identities[selected]
   var account = props.accounts[selected]
   const { network } = props
@@ -116,7 +117,7 @@ AccountDetailScreen.prototype.render = function () {
                   marginBottom: '15px',
                   color: '#AEAEAE',
                 },
-              }, ethUtil.toChecksumAddress(selected)),
+              }, checksumAddress),
 
               // copy and export
 
@@ -129,7 +130,7 @@ AccountDetailScreen.prototype.render = function () {
                 h(AccountInfoLink, { selected, network }),
 
                 h(CopyButton, {
-                  value: ethUtil.toChecksumAddress(selected),
+                  value: checksumAddress,
                 }),
 
                 h(Tooltip, {
diff --git a/ui/app/accounts/account-list-item.js b/ui/app/accounts/account-list-item.js
index 16019c88a..74ecef07f 100644
--- a/ui/app/accounts/account-list-item.js
+++ b/ui/app/accounts/account-list-item.js
@@ -17,6 +17,7 @@ function AccountListItem () {
 AccountListItem.prototype.render = function () {
   const { identity, selectedAccount, accounts, onShowDetail } = this.props
 
+  const checksumAddress = identity && identity.address && ethUtil.toChecksumAddress(identity.address)
   const isSelected = selectedAccount === identity.address
   const account = accounts[identity.address]
   const selectedClass = isSelected ? '.selected' : ''
@@ -48,7 +49,7 @@ AccountListItem.prototype.render = function () {
             overflow: 'hidden',
             textOverflow: 'ellipsis',
           },
-        }, ethUtil.toChecksumAddress(identity.address)),
+        }, checksumAddress),
         h(EthBalance, {
           value: account && account.balance,
           style: {
@@ -65,7 +66,7 @@ AccountListItem.prototype.render = function () {
         },
       }, [
         h(CopyButton, {
-          value: ethUtil.toChecksumAddress(identity.address),
+          value: checksumAddress,
         }),
       ]),
     ])
diff --git a/ui/app/first-time/init-menu.js b/ui/app/first-time/init-menu.js
index 152d28809..cc7c51bd3 100644
--- a/ui/app/first-time/init-menu.js
+++ b/ui/app/first-time/init-menu.js
@@ -152,7 +152,6 @@ InitializeMenuScreen.prototype.createNewVaultAndKeychain = function () {
   var password = passwordBox.value
   var passwordConfirmBox = document.getElementById('password-box-confirm')
   var passwordConfirm = passwordConfirmBox.value
-  // var entropy = document.getElementById('entropy-text-entry').value
 
   if (password.length < 8) {
     this.warning = 'password not long enough'