I am not having any luck in replicating this. Using current AS TRUNK I have deploying and undeploying various ejb3 MDBs with valid and invalid destinations, and starting and stopping the server several times, but have not observed a deadlock. Anil- you mentioned you could replicate this. Please can give you give instructions on how to do so? Thx View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4093430#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...