Hi, I too have the same issue. I installed JBoss 5.1.0 GA, Messaging 2.0.0 Beta 4. Ran the ClusteredQueueExample test that comes with JBM using ant and it worked sometimes but was not consistent, but when I started the queue jboss servers explicitly (i.e. server0 and server1 with exampleQueue created in jbm-jms.xml in both the nodes) and ran the ClusteredQueueExample.java from the eclipse ide then the example worked consistently without any issues. Then I made a minor change to the ClusteredQueueExample.java such that after producer sending 10 messages to the queue, the consumer code was modified to consume all 10 messages from node1 whereas consumer 1 consumes only 5 messages (0,2,4,6,8) from node1 and node 2 messages (1,3,5,7,9) were left unconsumed. If node 1 and node 2 are in cluster then irrespective of which node the consumer is pointing to, it should consume all 10 messages from both the nodes 1 and 2 right? The same code woks fine with JBoss 5.0.0 GA even after making changes to the consumer code and it picks all 10 messages from node1. Pls let me know what else I should do to make it work in JBoss 5.1.0? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4254623#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...