I have been testing JGroups 2.6.2 and it is working fine without any problems. However we need to update the configs at JBoss 5/multiplexor before the JBoss 5 release. It currently doesn't have Unicast as I could see. I'm a little confused to what will replace the multiplexor. Whatever it is we need the stack we currently use available on JBAS 5. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4138727#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...