I am running Jboss-4.03SP1 all server configuration. It seems the clustering itself seems to be working okay, but farm deployment is not. In order to use SingleScheduleProvider service ( to have a service running on only one instance ) do I have to use farm deployment ? Also by settting UDP loop back to true on windows machines, it took about 5 minutes for the machine to realize that they are in the cluster ? Is there any obvious thing I missing here in order to have the HASingleton working ? Thank you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4052199#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...