diff --git a/ethchain/block_chain.go b/ethchain/block_chain.go
index 21f540b963..96d22366d6 100644
--- a/ethchain/block_chain.go
+++ b/ethchain/block_chain.go
@@ -2,7 +2,6 @@ package ethchain
 
 import (
 	"bytes"
-	"fmt"
 	"github.com/ethereum/eth-go/ethutil"
 	"log"
 	"math"
@@ -119,7 +118,6 @@ func (bc *BlockChain) GetChain(hash []byte, amount int) []*Block {
 	var blocks []*Block
 
 	for i := 0; i < amount && block != nil; block = bc.GetBlock(block.PrevHash) {
-		fmt.Println(block)
 		blocks = append([]*Block{block}, blocks...)
 
 		if bytes.Compare(genHash, block.Hash()) == 0 {
diff --git a/ethereum.go b/ethereum.go
index e3038cbf9d..f86cb121e6 100644
--- a/ethereum.go
+++ b/ethereum.go
@@ -70,7 +70,7 @@ func New(caps Caps, usePnp bool) (*Ethereum, error) {
 	if usePnp {
 		nat, err = Discover()
 		if err != nil {
-			log.Println("UPnP failed", err)
+			ethutil.Config.Log.Debugln("UPnP failed", err)
 		}
 	}
 
@@ -234,7 +234,7 @@ func (s *Ethereum) Start() {
 		log.Println("Connection listening disabled. Acting as client")
 	} else {
 		// Starting accepting connections
-		log.Println("Ready and accepting connections")
+		ethutil.Config.Log.Infoln("Ready and accepting connections")
 		// Start the peer handler
 		go s.peerHandler(ln)
 	}
@@ -250,7 +250,7 @@ func (s *Ethereum) Start() {
 	s.TxPool.Start()
 
 	if ethutil.Config.Seed {
-		log.Println("Seeding")
+		ethutil.Config.Log.Debugln("Seeding")
 		// Testnet seed bootstrapping
 		resp, err := http.Get("http://www.ethereum.org/servers.poc3.txt")
 		if err != nil {
@@ -272,7 +272,7 @@ func (s *Ethereum) peerHandler(listener net.Listener) {
 	for {
 		conn, err := listener.Accept()
 		if err != nil {
-			log.Println(err)
+			ethutil.Config.Log.Debugln(err)
 
 			continue
 		}
@@ -315,13 +315,13 @@ out:
 			var err error
 			_, err = s.nat.AddPortMapping("TCP", int(lport), int(lport), "eth listen port", 20*60)
 			if err != nil {
-				log.Println("can't add UPnP port mapping:", err)
+				ethutil.Config.Log.Debugln("can't add UPnP port mapping:", err)
 				break out
 			}
 			if first && err == nil {
 				_, err = s.nat.GetExternalAddress()
 				if err != nil {
-					log.Println("UPnP can't get external address:", err)
+					ethutil.Config.Log.Debugln("UPnP can't get external address:", err)
 					continue out
 				}
 				first = false
@@ -335,8 +335,8 @@ out:
 	timer.Stop()
 
 	if err := s.nat.DeletePortMapping("TCP", int(lport), int(lport)); err != nil {
-		log.Println("unable to remove UPnP port mapping:", err)
+		ethutil.Config.Log.Debugln("unable to remove UPnP port mapping:", err)
 	} else {
-		log.Println("succesfully disestablished UPnP port mapping")
+		ethutil.Config.Log.Debugln("succesfully disestablished UPnP port mapping")
 	}
 }
diff --git a/peer.go b/peer.go
index ed81ddd8ed..9538e65003 100644
--- a/peer.go
+++ b/peer.go
@@ -6,7 +6,6 @@ import (
 	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/ethereum/eth-go/ethwire"
-	"log"
 	"net"
 	"runtime"
 	"strconv"
@@ -165,7 +164,7 @@ func NewOutboundPeer(addr string, ethereum *Ethereum, caps Caps) *Peer {
 		conn, err := net.DialTimeout("tcp", addr, 30*time.Second)
 
 		if err != nil {
-			log.Println("Connection to peer failed", err)
+			ethutil.Config.Log.Debugln("Connection to peer failed", err)
 			p.Stop()
 			return
 		}
@@ -202,7 +201,7 @@ func (p *Peer) writeMessage(msg *ethwire.Msg) {
 
 	err := ethwire.WriteMessage(p.conn, msg)
 	if err != nil {
-		log.Println("Can't send message:", err)
+		ethutil.Config.Log.Debugln("Can't send message:", err)
 		// Stop the client if there was an error writing to it
 		p.Stop()
 		return
@@ -264,7 +263,7 @@ func (p *Peer) HandleInbound() {
 		// Wait for a message from the peer
 		msgs, err := ethwire.ReadMessages(p.conn)
 		if err != nil {
-			log.Println(err)
+			ethutil.Config.Log.Debugln(err)
 		}
 		for _, msg := range msgs {
 			switch msg.Type {
@@ -277,7 +276,7 @@ func (p *Peer) HandleInbound() {
 				}
 			case ethwire.MsgDiscTy:
 				p.Stop()
-				log.Println("Disconnect peer:", DiscReason(msg.Data.Get(0).Uint()))
+				ethutil.Config.Log.Infoln("Disconnect peer:", DiscReason(msg.Data.Get(0).Uint()))
 			case ethwire.MsgPingTy:
 				// Respond back with pong
 				p.QueueMessage(ethwire.NewMessage(ethwire.MsgPongTy, ""))
@@ -296,9 +295,8 @@ func (p *Peer) HandleInbound() {
 
 					if err != nil {
 						if ethutil.Config.Debug {
-							log.Printf("[PEER] Block %x failed\n", block.Hash())
-							log.Printf("[PEER] %v\n", err)
-							log.Println(block)
+							ethutil.Config.Log.Infof("[PEER] Block %x failed\n", block.Hash())
+							ethutil.Config.Log.Infof("[PEER] %v\n", err)
 						}
 						break
 					} else {
@@ -309,7 +307,7 @@ func (p *Peer) HandleInbound() {
 				if err != nil {
 					// If the parent is unknown try to catch up with this peer
 					if ethchain.IsParentErr(err) {
-						log.Println("Attempting to catch up")
+						ethutil.Config.Log.Infoln("Attempting to catch up")
 						p.catchingUp = false
 						p.CatchupWithPeer()
 					} else if ethchain.IsValidationErr(err) {
@@ -321,7 +319,7 @@ func (p *Peer) HandleInbound() {
 					if p.catchingUp && msg.Data.Len() > 1 {
 						if ethutil.Config.Debug && lastBlock != nil {
 							blockInfo := lastBlock.BlockInfo()
-							log.Printf("Synced to block height #%d %x %x\n", blockInfo.Number, lastBlock.Hash(), blockInfo.Hash)
+							ethutil.Config.Log.Infof("Synced to block height #%d %x %x\n", blockInfo.Number, lastBlock.Hash(), blockInfo.Hash)
 						}
 						p.catchingUp = false
 						p.CatchupWithPeer()
@@ -392,12 +390,12 @@ func (p *Peer) HandleInbound() {
 					p.QueueMessage(ethwire.NewMessage(ethwire.MsgNotInChainTy, []interface{}{lastHash.Raw()}))
 				}
 			case ethwire.MsgNotInChainTy:
-				log.Printf("Not in chain %x\n", msg.Data)
+				ethutil.Config.Log.Infoln("Not in chain %x\n", msg.Data)
 				// TODO
 
 				// Unofficial but fun nonetheless
 			case ethwire.MsgTalkTy:
-				log.Printf("%v says: %s\n", p.conn.RemoteAddr(), msg.Data.Str())
+				ethutil.Config.Log.Infoln("%v says: %s\n", p.conn.RemoteAddr(), msg.Data.Str())
 			}
 		}
 	}
@@ -440,7 +438,7 @@ func (p *Peer) Start() {
 
 	err := p.pushHandshake()
 	if err != nil {
-		log.Println("Peer can't send outbound version ack", err)
+		ethutil.Config.Log.Debugln("Peer can't send outbound version ack", err)
 
 		p.Stop()
 
@@ -499,7 +497,7 @@ func (p *Peer) handleHandshake(msg *ethwire.Msg) {
 	c := msg.Data
 
 	if c.Get(0).Uint() != 5 {
-		log.Println("Invalid peer version. Require protocol v4")
+		ethutil.Config.Log.Debugln("Invalid peer version. Require protocol v5")
 		p.Stop()
 		return
 	}
@@ -531,7 +529,7 @@ func (p *Peer) handleHandshake(msg *ethwire.Msg) {
 	// Get a reference to the peers version
 	p.Version = c.Get(2).Str()
 
-	log.Println("[PEER]", p)
+	ethutil.Config.Log.Debugln("[PEER]", p)
 }
 
 func (p *Peer) String() string {
@@ -558,7 +556,7 @@ func (p *Peer) CatchupWithPeer() {
 		msg := ethwire.NewMessage(ethwire.MsgGetChainTy, []interface{}{p.ethereum.BlockManager.BlockChain().CurrentBlock.Hash(), uint64(50)})
 		p.QueueMessage(msg)
 
-		log.Printf("Requesting blockchain %x...\n", p.ethereum.BlockManager.BlockChain().CurrentBlock.Hash()[:4])
+		ethutil.Config.Log.Debugln("Requesting blockchain %x...\n", p.ethereum.BlockManager.BlockChain().CurrentBlock.Hash()[:4])
 	}
 }