diff --git a/ethchain/asm.go b/ethchain/asm.go
index 277326ff9..c267f9b55 100644
--- a/ethchain/asm.go
+++ b/ethchain/asm.go
@@ -28,7 +28,7 @@ func Disassemble(script []byte) (asm []string) {
 			if len(data) == 0 {
 				data = []byte{0}
 			}
-			asm = append(asm, fmt.Sprintf("0x%x", data))
+			asm = append(asm, fmt.Sprintf("%#x", data))
 
 			pc.Add(pc, big.NewInt(a-1))
 		}
diff --git a/ethchain/block_chain.go b/ethchain/block_chain.go
index 8cede2403..19b5248d7 100644
--- a/ethchain/block_chain.go
+++ b/ethchain/block_chain.go
@@ -55,6 +55,8 @@ func (bc *BlockChain) NewBlock(coinbase []byte) *Block {
 		nil,
 		"")
 
+	block.MinGasPrice = big.NewInt(10000000000000)
+
 	if bc.CurrentBlock != nil {
 		var mul *big.Int
 		if block.Time < lastBlockTime+42 {
diff --git a/ethchain/state_transition.go b/ethchain/state_transition.go
index a080c5602..5ded0cddd 100644
--- a/ethchain/state_transition.go
+++ b/ethchain/state_transition.go
@@ -131,14 +131,21 @@ func (self *StateTransition) TransitionState() (err error) {
 		return NonceError(tx.Nonce, sender.Nonce)
 	}
 
-	// Increment the nonce for the next transaction
-	sender.Nonce += 1
-
 	// Pre-pay gas / Buy gas of the coinbase account
 	if err = self.BuyGas(); err != nil {
 		return err
 	}
 
+	// XXX Transactions after this point are considered valid.
+
+	defer func() {
+		self.state.UpdateStateObject(sender)
+		self.state.UpdateStateObject(receiver)
+	}()
+
+	// Increment the nonce for the next transaction
+	sender.Nonce += 1
+
 	// Get the receiver (TODO fix this, if coinbase is the receiver we need to save/retrieve)
 	receiver = self.Receiver()
 
@@ -187,9 +194,6 @@ func (self *StateTransition) TransitionState() (err error) {
 	remaining := new(big.Int).Mul(self.gas, tx.GasPrice)
 	sender.AddAmount(remaining)
 
-	self.state.UpdateStateObject(sender)
-	self.state.UpdateStateObject(receiver)
-
 	return nil
 }
 
diff --git a/ethchain/types.go b/ethchain/types.go
index ee70a8d28..d89fad147 100644
--- a/ethchain/types.go
+++ b/ethchain/types.go
@@ -226,7 +226,7 @@ var opCodeToString = map[OpCode]string{
 func (o OpCode) String() string {
 	str := opCodeToString[o]
 	if len(str) == 0 {
-		return fmt.Sprintf("Missing opcode 0x%x", int(o))
+		return fmt.Sprintf("Missing opcode %#x", int(o))
 	}
 
 	return str
diff --git a/ethminer/miner.go b/ethminer/miner.go
index d05405391..30b7ef35d 100644
--- a/ethminer/miner.go
+++ b/ethminer/miner.go
@@ -136,11 +136,18 @@ func (self *Miner) mineNewBlock() {
 
 	// Sort the transactions by nonce in case of odd network propagation
 	sort.Sort(ethchain.TxByNonce{self.txs})
+
 	// Accumulate all valid transaction and apply them to the new state
-	receipts, txs := stateManager.ApplyTransactions(self.block.Coinbase, self.block.State(), self.block, self.txs)
-	self.txs = txs
+	// Error may be ignored. It's not important during mining
+	receipts, txs, unhandledTxs, err := stateManager.ProcessTransactions(self.block.Coinbase, self.block.State(), self.block, self.block, self.txs)
+	if err != nil {
+		ethutil.Config.Log.Debugln("[MINER]", err)
+	}
+	self.txs = append(txs, unhandledTxs...)
+
 	// Set the transactions to the block so the new SHA3 can be calculated
 	self.block.SetReceipts(receipts, txs)
+
 	// Accumulate the rewards included for this block
 	stateManager.AccumelateRewards(self.block.State(), self.block)
 
diff --git a/peer.go b/peer.go
index 4434715fb..9da2ed002 100644
--- a/peer.go
+++ b/peer.go
@@ -19,7 +19,7 @@ const (
 	// Current protocol version
 	ProtocolVersion = 20
 	// Interval for ping/pong message
-	pingPongTimer = 30 * time.Second
+	pingPongTimer = 1 * time.Second
 )
 
 type DiscReason byte
@@ -270,7 +270,7 @@ out:
 		// Ping timer
 		case <-pingTimer.C:
 			timeSince := time.Since(time.Unix(p.lastPong, 0))
-			if p.pingStartTime.IsZero() == false && timeSince > (pingPongTimer+10*time.Second) {
+			if !p.pingStartTime.IsZero() && p.lastPong != 0 && timeSince > (pingPongTimer+10*time.Second) {
 				ethutil.Config.Log.Infof("[PEER] Peer did not respond to latest pong fast enough, it took %s, disconnecting.\n", timeSince)
 				p.Stop()
 				return