Will do. When I get back in the office on Monday I'm going to construct a very simple application to verify the clustering session replication. I know this functionality undergoes rigorous internal testing and has to be past a suite of testcases before each release. I don't suspect that this is an issue with the session replication in GlassFish. S.D. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4109574#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...