Do not mark slowly mined txs as failed.

Fixes #1567

Also seems to fix #1556

Also improves resubmit performance by only resubmitting on `latest`.

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Current Master
 
 - Add a warning to JSON file import.
+- Fix bug where slowly mined txs would sometimes be incorrectly marked as failed.
 
 ## 3.7.8 2017-6-12
 

app/scripts/controllers/transactions.js

@@ -25,7 +25,7 @@ module.exports = class TransactionController extends EventEmitter {
     this.query = opts.ethQuery
     this.txProviderUtils = new TxProviderUtil(this.query)
     this.blockTracker.on('block', this.checkForTxInBlock.bind(this))
-    this.blockTracker.on('block', this.resubmitPendingTxs.bind(this))
+    this.blockTracker.on('latest', this.resubmitPendingTxs.bind(this))
     this.signEthTx = opts.signTransaction
     this.nonceLock = Semaphore(1)
 
@@ -430,12 +430,8 @@ module.exports = class TransactionController extends EventEmitter {
     }
 
     if (txMeta.retryCount > RETRY_LIMIT) {
-      txMeta.err = {
-        isWarning: true,
-        message: 'Gave up submitting tx.',
-      }
-      this.updateTx(txMeta)
-      return log.error(txMeta.err.message)
+      const message = 'Gave up submitting tx ' + txMeta.hash
+      return log.warning(message)
     }
 
     txMeta.retryCount++