diff --git a/agent/src/share/classes/sun/jvm/hotspot/memory/CMSCollector.java b/agent/src/share/classes/sun/jvm/hotspot/memory/CMSCollector.java
index df35e9064c7febb7f099810f5b33939f25d7cf4d..f28caad66e738e086018984cb6540c7df5539801 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/memory/CMSCollector.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/memory/CMSCollector.java
@@ -61,15 +61,13 @@ public class CMSCollector extends VMObject {
     CMSBitMap markBitMap = markBitMap();
     long addressSize = VM.getVM().getAddressSize();
     if ( markBitMap.isMarked(addr) &&  markBitMap.isMarked(addr.addOffsetTo(1*addressSize)) ) {
-       System.err.println("Printezis bits are set...");
       Address nextOneAddr = markBitMap.getNextMarkedWordAddress(addr.addOffsetTo(2*addressSize));
       //return size in bytes
       long size =  (nextOneAddr.addOffsetTo(1*addressSize)).minus(addr);
       return size;
     } else {
-     //missing Printezis marks
-     System.err.println("Missing Printszis marks...");
-     return -1;
+      //missing Printezis marks
+      return -1;
     }
 
   }
diff --git a/agent/src/share/classes/sun/jvm/hotspot/memory/CompactibleFreeListSpace.java b/agent/src/share/classes/sun/jvm/hotspot/memory/CompactibleFreeListSpace.java
index f47f0e8112726d9f242291298742a62873a06d02..23cb0bcb7fbe49e0553d5480701f5b6420e72e00 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/memory/CompactibleFreeListSpace.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/memory/CompactibleFreeListSpace.java
@@ -191,7 +191,6 @@ public class CompactibleFreeListSpace extends CompactibleSpace {
             //Find the object size using Printezis bits and skip over
             long size = collector().blockSizeUsingPrintezisBits(cur);
             if (size == -1) {
-              System.err.println("Printezis bits not set...");
               break;
             }
             cur = cur.addOffsetTo(adjustObjectSizeInBytes(size));
diff --git a/agent/src/share/classes/sun/jvm/hotspot/oops/MethodData.java b/agent/src/share/classes/sun/jvm/hotspot/oops/MethodData.java
index 40ede727708c66314435f22a5100393ea4715126..a397ec353ac2779e3df36ebd9544f2614a78954b 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/oops/MethodData.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/oops/MethodData.java
@@ -184,7 +184,6 @@ public class MethodData extends Metadata {
       if (trapReasonName[index] == null) {
         throw new InternalError("missing reason for " + index);
       }
-      System.out.println(trapReasonName[index]);
     }
   }
 
diff --git a/agent/src/share/classes/sun/jvm/hotspot/oops/ObjectHeap.java b/agent/src/share/classes/sun/jvm/hotspot/oops/ObjectHeap.java
index f944188f4d16800752f3e783c724a1e12fca2988..e663ee8e18f530b98787c855652ae26e8a515e66 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/oops/ObjectHeap.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/oops/ObjectHeap.java
@@ -335,7 +335,6 @@ public class ObjectHeap {
           }
           if (obj == null) {
              //Find the object size using Printezis bits and skip over
-             System.err.println("Finding object size using Printezis bits and skipping over...");
              long size = 0;
 
              if ( (cmsSpaceOld != null) && cmsSpaceOld.contains(handle) ){