Index: core/src/main/scala/kafka/utils/Utils.scala
===================================================================
--- core/src/main/scala/kafka/utils/Utils.scala	(revision 1226576)
+++ core/src/main/scala/kafka/utils/Utils.scala	(working copy)
@@ -60,8 +60,7 @@
         catch {
           case t =>
             // log any error and the stack trace
-            error(t)
-            error(stackTrace(t), t)
+            error("error in loggedRunnable", t)
         }
       }
     }
Index: core/src/main/scala/kafka/producer/SyncProducer.scala
===================================================================
--- core/src/main/scala/kafka/producer/SyncProducer.scala	(revision 1226576)
+++ core/src/main/scala/kafka/producer/SyncProducer.scala	(working copy)
@@ -61,13 +61,13 @@
             }
             catch {
               case e: Throwable =>
-              trace("error iterating messages " + e + Utils.stackTrace(e))
+                trace("error iterating messages ", e)
             }
           }
         }
         catch {
           case e: Throwable =>
-            trace("error verifying sendbuffer " + e + Utils.stackTrace(e))
+            trace("error verifying sendbuffer ", e)
         }
       }
     }
Index: core/src/main/scala/kafka/server/KafkaServerStartable.scala
===================================================================
--- core/src/main/scala/kafka/server/KafkaServerStartable.scala	(revision 1226576)
+++ core/src/main/scala/kafka/server/KafkaServerStartable.scala	(working copy)
@@ -203,8 +203,7 @@
       }
       catch {
         case e =>
-          fatal(e + Utils.stackTrace(e))
-          fatal(topic + " stream " + threadId + " unexpectedly exited")
+          fatal(topic + " stream " + threadId + " unexpectedly exited", e)
       }finally {
         shutdownComplete.countDown
         info("Stopped mirroring thread %s for topic %s and stream %d".format(name, topic, threadId))