Wait with mining until up to date

utils/cmd.go

@@ -34,11 +34,10 @@ func DoMining(ethereum *eth.Ethereum) {
 		// Give it some time to connect with peers
 		time.Sleep(3 * time.Second)
 
-		/*
-			for ethereum.IsUpToDate() == false {
-				time.Sleep(5 * time.Second)
-			}
-		*/
+		for ethereum.IsUpToDate() == false {
+			time.Sleep(5 * time.Second)
+		}
+
 		ethutil.Config.Log.Infoln("Miner started")
 
 		miner := ethminer.NewDefaultMiner(addr, ethereum)