### Eclipse Workspace Patch 1.0
#P JGroups-HEAD
Index: src/org/jgroups/protocols/pbcast/NAKACK.java
===================================================================
RCS file: /cvsroot/javagroups/JGroups/src/org/jgroups/protocols/pbcast/NAKACK.java,v
retrieving revision 1.129
diff -u -r1.129 NAKACK.java
--- src/org/jgroups/protocols/pbcast/NAKACK.java	27 Apr 2007 15:32:11 -0000	1.129
+++ src/org/jgroups/protocols/pbcast/NAKACK.java	27 Apr 2007 17:49:53 -0000
@@ -688,7 +688,7 @@
             return;
         }
 
-        boolean added=local_addr.equals(sender) || win.add(hdr.seqno, msg);
+        boolean added=(local_addr.equals(sender) && win.getHighestDelivered()<hdr.seqno) || win.add(hdr.seqno, msg);
 
         // message is passed up if OOB. Later, when remove() is called, we discard it. This affects ordering !
         // http://jira.jboss.com/jira/browse/JGRP-379