anonymous wrote : 2. From your analysis, do you think the lock-up will only occur after a "problematic" client has tried to connect, or can it happen anyway? It only happens with Lease and an invalid client. If your server has access to clients... this won't happen. anonymous wrote : | 3. Is there a way to revive only the locked-up Messaging on the server without having to restart the whole JBoss AS (e.g. via an MBean)? I'm not 100% sure if you kill your client, if that would unlock the dead lock. From what I saw when the server locks you need to restart it. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4017069#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...