diff --git a/src/app/execution/txListener.js b/src/app/execution/txListener.js
index ed34067f3f..104300ac2d 100644
--- a/src/app/execution/txListener.js
+++ b/src/app/execution/txListener.js
@@ -62,22 +62,36 @@ class TxListener {
       this.loopId = 'vm-listener'
     } else {
       this.loopId = setInterval(() => {
+        var currentLoopId = this.loopId
         executionContext.web3().eth.getBlockNumber((error, blockNumber) => {
           if (this.loopId === null || this.loopId === 'vm-listener') return
           if (error) return console.log(error)
-          if (!this.lastBlock || blockNumber > this.lastBlock) {
+          if (currentLoopId === this.loopId && (!this.lastBlock || blockNumber > this.lastBlock)) {
+            if (!this.lastBlock) this.lastBlock = blockNumber - 1
+            var current = this.lastBlock + 1
             this.lastBlock = blockNumber
-            executionContext.web3().eth.getBlock(this.lastBlock, true, (error, result) => {
-              if (!error) {
-                this._newBlock(Object.assign({type: 'web3'}, result))
+            while (blockNumber >= current) {
+              try {
+                this._manageBlock(current)
+              } catch (e) {
+                console.log(e)
               }
-            })
+              current++
+            }
           }
         })
-      }, 2)
+      }, 2000)
     }
   }
 
+  _manageBlock (blockNumber) {
+    executionContext.web3().eth.getBlock(blockNumber, true, (error, result) => {
+      if (!error) {
+        this._newBlock(Object.assign({type: 'web3'}, result))
+      }
+    })
+  }
+
   /**
     * stop listening for incoming transactions. do not reset the recorded pool.
     *
@@ -194,7 +208,7 @@ class TxListener {
             fn: fn,
             params: this._decodeInputParams(inputData.substring(8), getFunction(abi, fn))
           }
-          return
+          return this._resolvedTransactions[tx.hash]
         }
       }
       // fallback function
diff --git a/src/app/execution/txLogger.js b/src/app/execution/txLogger.js
index d5e28a501d..84781976b9 100644
--- a/src/app/execution/txLogger.js
+++ b/src/app/execution/txLogger.js
@@ -22,6 +22,16 @@ class TxLogger {
     opts.api.editorpanel.registerLogType('unknownTransaction', (data) => {
       return renderUnknownTransaction(this, data)
     })
+    opts.api.editorpanel.registerLogType('emptyBlock', (data) => {
+      return renderEmptyBlock(this, data)
+    })
+
+    opts.events.txListener.register('newBlock', (block) => {
+      if (!block.transactions.length) {
+        opts.api.editorpanel.log({type: 'emptyBlock', value: { block: block }})
+      }
+    })
+
     opts.events.txListener.register('newTransaction', (tx) => {
       log(this, tx, opts.api)
     })
@@ -66,11 +76,15 @@ function renderUnknownTransaction (self, data) {
   return yo`<span id="tx${data.tx.hash}">${context(self, data.tx)}: from:${helper.shortenAddress(data.tx.from)}, to:${to}, value:${value(data.tx.value)} wei, data:${helper.shortenHexData((data.tx.input))}, hash:${helper.shortenHexData((data.tx.hash))}, <button onclick=${detail}>Details</button> <button onclick=${debug}>Debug</button></span>`
 }
 
+function renderEmptyBlock (self, data) {
+  return yo`<span>block ${data.block.number} - O transactions</span>`
+}
+
 function context (self, tx) {
   if (executionContext.getProvider() === 'vm') {
     return yo`<span>(vm)</span>`
   } else {
-    return yo`<span>block:${tx.blockNumber}, txIndex:${tx.transactionIndex}`
+    return yo`<span>block:${tx.blockNumber}, txIndex:${tx.transactionIndex}</span>`
   }
 }
 
diff --git a/src/app/execution/txRunner.js b/src/app/execution/txRunner.js
index a754129f9b..2e7a59942e 100644
--- a/src/app/execution/txRunner.js
+++ b/src/app/execution/txRunner.js
@@ -69,7 +69,7 @@ TxRunner.prototype.execute = function (args, callback) {
             return callback(err, resp)
           }
 
-          tryTillResponse(self.web3, resp, callback)
+          tryTillResponse(resp, callback)
         })
       })
     }