Index: core/src/main/java/org/infinispan/interceptors/InvocationContextInterceptor.java
===================================================================
--- core/src/main/java/org/infinispan/interceptors/InvocationContextInterceptor.java	(revision 1799)
+++ core/src/main/java/org/infinispan/interceptors/InvocationContextInterceptor.java	(revision )
@@ -28,8 +28,11 @@
 import org.infinispan.context.InvocationContext;
 import org.infinispan.factories.annotations.Inject;
 import org.infinispan.interceptors.base.CommandInterceptor;
+import org.infinispan.util.Util;
 import org.infinispan.util.concurrent.locks.LockManager;
 
+import java.util.Random;
+
 public class InvocationContextInterceptor extends CommandInterceptor {
 
    LockManager lockManager;
@@ -55,8 +58,16 @@
       }
 
       try {
-         return invokeNextInterceptor(ctx, command);
+         Object result = invokeNextInterceptor(ctx, command);
+         if (log.isTraceEnabled())  {
+            if (result != null && result instanceof byte[]) {
+               log.trace("Returning: " + Util.printArray((byte[])result, true));
+            } else {
+               log.trace("Returning: " + result);
-      }
+            }
+         }
+         return result;
+      }
       catch (Throwable th) {
          // make sure we release locks for all keys locked in this invocation!
          for (Object key: ctx.getKeysAddedInCurrentInvocation()) {
@@ -84,4 +95,6 @@
          ctx.reset();
       }
    }
+
+   public static Random  rnd = new Random();
 }
\ No newline at end of file
Index: lucene-directory/src/test/resources/log4j.xml
===================================================================
--- lucene-directory/src/test/resources/log4j.xml	(revision 1927)
+++ lucene-directory/src/test/resources/log4j.xml	(revision )
@@ -8,7 +8,7 @@
 
    <!-- A time/date based rolling appender -->
    <appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
-      <param name="File" value="infinispan.log"/>
+      <param name="File" value="lucene.log"/>
       <param name="Append" value="false"/>
 
       <!-- Rollover at midnight each day -->
@@ -40,7 +40,11 @@
    <category name="org.infinispan">
       <priority value="INFO"/>
    </category>
-   
+
+   <category name="org.infinispan.interceptors.InvocationContextInterceptor">
+      <priority value="TRACE"/>
+   </category>
+
    <category name="org.infinispan.lucene">
       <priority value="INFO"/>
    </category>