diff --git a/app.js b/app.js
index bec719d..f4eb12d 100644
--- a/app.js
+++ b/app.js
@@ -43,7 +43,7 @@ api.on('connection', function(spark) {
     spark.on('hello', function(data)
     {
         console.log('Latency: ', spark.latency);
-        console.log('got hello data from ', spark.id);
+        console.log('Got hello data from ', spark.id);
         console.log(data);
 
         if(typeof data.secret === 'undefined' || data.secret !== WS_SECRET)
@@ -75,20 +75,23 @@ api.on('connection', function(spark) {
     spark.on('update', function(data)
     {
         console.log('Latency: ', spark.latency);
-        console.log('got update from ' + spark.id);
+        console.log('Got update from ' + spark.id);
 
         if(typeof data.id !== 'undefined' && typeof data.stats !== 'undefined')
         {
             data.stats.latency = spark.latency;
 
             var stats = Nodes.update(data.id, data.stats);
-            client.write({action: 'update', data: stats});
+            if(stats !== false)
+            {
+                client.write({action: 'update', data: stats});
 
-            var blockPropagationChart = Nodes.blockPropagationChart();
-            client.write({action: 'blockPropagationChart', data: blockPropagationChart});
+                var blockPropagationChart = Nodes.blockPropagationChart();
+                client.write({action: 'blockPropagationChart', data: blockPropagationChart});
 
-            var uncleCount = Nodes.getUncleCount();
-            client.write({action: 'uncleCount', data: uncleCount});
+                var uncleCount = Nodes.getUncleCount();
+                client.write({action: 'uncleCount', data: uncleCount});
+            }
         }
     });
 
@@ -98,9 +101,6 @@ api.on('connection', function(spark) {
 
     spark.on('latency', function(data)
     {
-        console.log('Latency: ', data.latency);
-        console.log('got ping from ' + spark.id);
-
         if(typeof data.id !== 'undefined')
         {
             var stats = Nodes.updateLatency(data.id, data.latency);
@@ -123,9 +123,6 @@ client.on('connection', function(spark) {
     console.log(spark.query);
 
     spark.on('ready', function(data){
-        console.log('got hello data from ' + spark.id);
-        console.log(data);
-
         spark.emit('init', {nodes: Nodes.all()});
 
         var blockPropagationChart = Nodes.blockPropagationChart();
diff --git a/models/collection.js b/models/collection.js
index 0243944..c460db6 100644
--- a/models/collection.js
+++ b/models/collection.js
@@ -27,6 +27,10 @@ Collection.prototype.update = function(id, stats)
 		return false;
 
 	var block = this._history.add(stats.block, id);
+
+	if(! block)
+		return false;
+
 	var propagationHistory = this._history.getNodePropagation(id);
 
 	stats.block.arrived = block.arrived;
diff --git a/models/history.js b/models/history.js
index 883a958..38ae779 100644
--- a/models/history.js
+++ b/models/history.js
@@ -33,47 +33,51 @@ var History = function History(data)
 
 History.prototype.add = function(block, id)
 {
-	var historyBlock = this.search(block.number);
-
-	var now = (new Date()).getTime();
-	block.arrived = now;
-	block.received = now;
-	block.propagation = 0;
-
-	if(historyBlock)
+	if(typeof block !== 'undefined' && typeof block.number !== 'undefined' && typeof block.uncles !== 'undefined' && typeof block.transactions !== 'undefined')
 	{
-		var propIndex = _.findIndex(historyBlock.propagTimes, {node: id});
+		var historyBlock = this.search(block.number);
 
-		if(propIndex === -1)
+		var now = (new Date()).getTime();
+		block.arrived = now;
+		block.received = now;
+		block.propagation = 0;
+
+		if(historyBlock)
 		{
-			block.arrived = historyBlock.block.arrived;
-			block.received = now;
-			block.propagation = now - historyBlock.block.received;
+			var propIndex = _.findIndex(historyBlock.propagTimes, {node: id});
 
-			historyBlock.propagTimes.push({node: id, received: now, propagation: block.propagation});
+			if(propIndex === -1)
+			{
+				block.arrived = historyBlock.block.arrived;
+				block.received = now;
+				block.propagation = now - historyBlock.block.received;
+
+				historyBlock.propagTimes.push({node: id, received: now, propagation: block.propagation});
+			}
+			else
+			{
+				block.arrived = historyBlock.block.arrived;
+				block.received = historyBlock.propagTimes[propIndex].received;
+				block.propagation = historyBlock.propagTimes[propIndex].propagation;
+			}
 		}
 		else
 		{
-			block.arrived = historyBlock.block.arrived;
-			block.received = historyBlock.propagTimes[propIndex].received;
-			block.propagation = historyBlock.propagTimes[propIndex].propagation;
-		}
-	}
-	else
-	{
-		var item = {
-			height: block.number,
-			block: block,
-			propagTimes: []
-		}
+			var item = {
+				height: block.number,
+				block: block,
+				propagTimes: []
+			}
 
-		item.propagTimes.push({node: id, received: now, propagation: block.propagation});
-		console.log('item: ', item);
-		this._save(item);
-	}
-	this.getNodePropagation(id);
+			item.propagTimes.push({node: id, received: now, propagation: block.propagation});
+			this._save(item);
+		}
+		this.getNodePropagation(id);
 
-	return block;
+		return block;
+	}
+
+	return false;
 }
 
 History.prototype._save = function(block)
@@ -170,7 +174,29 @@ History.prototype.getUncleCount = function(id)
 		})
 		.value();
 
-	console.log(uncles);
+	var uncleBins = _.fill(Array(MAX_BINS), 0);
+
+	var sumMapper = function(array, key) {
+		uncleBins[key] = _.sum(array);
+		return _.sum(array);
+	};
+
+	_.map(_.chunk(uncles, MAX_UNCLES_PER_BIN), sumMapper);
+
+	return uncleBins;
+}
+
+History.prototype.getTransactionsCount = function(id)
+{
+	var uncles = _(this._items)
+		.sortByOrder('height', false)
+		.slice(0, MAX_BINS - 1)
+		.reverse()
+		.map(function(item)
+		{
+			return item.block.transactions.length;
+		})
+		.value();
 
 	var uncleBins = _.fill(Array(MAX_BINS), 0);
 
diff --git a/package.json b/package.json
index 43878ab..ef7819b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "eth-netstats",
   "description": "Ethereum Network Intelligence dashboard",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "private": true,
   "engines": {
     "node": "0.12.0",