Index: org/apache/catalina/tribes/group/interceptors/NonBlockingCoordinator.java
===================================================================
--- org/apache/catalina/tribes/group/interceptors/NonBlockingCoordinator.java	(revision 831814)
+++ org/apache/catalina/tribes/group/interceptors/NonBlockingCoordinator.java	(working copy)
@@ -819,7 +819,7 @@
         }
         
         public String toString() {
-            StringBuffer buf = new StringBuffer("CoordinationEvent[type=");
+            StringBuilder buf = new StringBuilder("CoordinationEvent[type=");
             buf.append(type).append("\n\tLocal:");
             Member local = interceptor.getLocalMember(false);
             buf.append(local!=null?local.getName():"").append("\n\tCoord:");
Index: org/apache/catalina/tribes/group/interceptors/ThroughputInterceptor.java
===================================================================
--- org/apache/catalina/tribes/group/interceptors/ThroughputInterceptor.java	(revision 831814)
+++ org/apache/catalina/tribes/group/interceptors/ThroughputInterceptor.java	(working copy)
@@ -88,7 +88,7 @@
     }
     
     public void report(double timeTx) {
-        StringBuffer buf = new StringBuffer("ThroughputInterceptor Report[\n\tTx Msg:");
+        StringBuilder buf = new StringBuilder("ThroughputInterceptor Report[\n\tTx Msg:");
         buf.append(msgTxCnt).append(" messages\n\tSent:");
         buf.append(df.format(mbTx));
         buf.append(" MB (total)\n\tSent:");