OK, I searched through JIRA. I found two fixes that seem related to other problems we are having, but nothing that directly addresses this problem with the join node. In 3.2/3.3 a token entering a join locks its parent node. There's a lot of discussion about this and it seems relevant, but in 3.1 there is no equivalent locking mechanism. If anyone can supply some details about this, please chime in. I suspect this may also be causing StaleObjectStateException / cannot sync session errors we are seeing. Thanx. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4255737#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...