I don't know why I see so many object waits in above thread dumps. Also, as we add node to the cluster, startup terribly becomes slow. It looks like it take a very long time inintializing 10 HA SingletonControllers we have. Sometimes it just declares one of the nodes as Dead member even though all the nodes are up and no packets have been dropped. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4191936#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...