diff --git a/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscovery.java b/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscovery.java
index ba688780..00ff1c18 100644
--- a/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscovery.java
+++ b/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscovery.java
@@ -45,7 +45,7 @@ public class PeerDiscovery {
                 new ArrayBlockingQueue<Runnable>(CONFIG.peerDiscoveryWorkers()), threadFactory, rejectionHandler);
 
         //start the monitoring thread
-        monitor = new PeerDiscoveryMonitorThread(executorPool, 0);
+        monitor = new PeerDiscoveryMonitorThread(executorPool, 1);
         Thread monitorThread = new Thread(monitor);
         monitorThread.start();
 
diff --git a/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscoveryMonitorThread.java b/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscoveryMonitorThread.java
index f8875ec4..5b50f2b2 100644
--- a/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscoveryMonitorThread.java
+++ b/ethereumj-core/src/main/java/org/ethereum/net/peerdiscovery/PeerDiscoveryMonitorThread.java
@@ -1,18 +1,19 @@
 package org.ethereum.net.peerdiscovery;
 
+import java.util.concurrent.ThreadPoolExecutor;
+
 import org.ethereum.manager.WorldManager;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.concurrent.ThreadPoolExecutor;
-
 public class PeerDiscoveryMonitorThread implements Runnable {
     private final static Logger logger = LoggerFactory.getLogger("peerdiscovery");
 
     private ThreadPoolExecutor executor;
     private int seconds;
     private volatile boolean run = true;
-
+    private StringBuffer toStringBuff = new StringBuffer();
+    
 	public PeerDiscoveryMonitorThread(ThreadPoolExecutor executor, int delay) {
 		this.executor = executor;
 		this.seconds = delay;
@@ -25,16 +26,26 @@ public class PeerDiscoveryMonitorThread implements Runnable {
     @Override
     public void run() {
         while(run) {
-            logger.trace(
-                    String.format("[monitor] [%d/%d] Active: %d, Completed: %d, Task: %d, isShutdown: %s, isTerminated: %s, peersDiscovered: %d ",
-                            this.executor.getPoolSize(),
-                            this.executor.getCorePoolSize(),
-                            this.executor.getActiveCount(),
-                            this.executor.getCompletedTaskCount(),
-                            this.executor.getTaskCount(),
-                            this.executor.isShutdown(),
-                            this.executor.isTerminated(),
-                            WorldManager.getInstance().getPeers().size()));
+        	if (logger.isDebugEnabled()) {
+	            toStringBuff.setLength(0);
+	            toStringBuff.append("[monitor] [");
+	            toStringBuff.append(this.executor.getPoolSize());
+	            toStringBuff.append("/");
+	            toStringBuff.append(this.executor.getCorePoolSize());
+	            toStringBuff.append("] Active: ");
+	            toStringBuff.append(this.executor.getActiveCount());
+	            toStringBuff.append(", Completed: ");
+	            toStringBuff.append(this.executor.getCompletedTaskCount());
+	            toStringBuff.append(", Task: ");
+	            toStringBuff.append(this.executor.getTaskCount());
+	            toStringBuff.append(", isShutdown: ");
+	            toStringBuff.append(this.executor.isShutdown());
+	            toStringBuff.append(", isTerminated: ");
+	            toStringBuff.append(this.executor.isTerminated());
+	            toStringBuff.append(", peersDiscovered: ");
+	            toStringBuff.append(WorldManager.getInstance().getPeers().size());
+	            logger.trace(toStringBuff.toString());
+        	}	
             try {
                 Thread.sleep(seconds*1000);
             } catch (InterruptedException e) {