"objectbay" wrote : What does the call to ce.lock() really mean? And can anybody explain why this would fail? It means, get a lock on the conversation. It would fail if the conversation was in use by another thread. anonymous wrote : Is there a problem with calling switcher.select() from an a:support? I would guess yes. It's not the issue in http://jira.jboss.org/jira/browse/JBSEAM-1832. I guess you could file a feature request to allow this to be supported... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120881#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...