Hi, The 1.50 and 2.0 differ on the support for Asynchronous aspect. 1.5.0 : has two implementation 1. org.jboss.aspects.asynch.AsynchAspect 2. org.jboss.aspects.asynchronous.aspects.jboss.AsynchronousAspect However, JBoss AOP 2.0 does not contain the AsynchAspect at all. Also it has some AsynchronousFacade. Does it mean that AsynchAspect is being phased out in 2.0 and so user having JBoss AOP version 1.5.0 should not plan on using it? Nothing of this has been mention in the user guide, release notes etc. Thanks, Sameer View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4063656#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...