AS 4.2.1.GA should ship with AOP 1.5.5.GA. It is slightly related to the mentioned thread, although the thread you mention is for AOP 2.0.0 and AS 5. The weaving is done when the class is first loaded via the classloader hook (i.e -javaagent). The classloader hook then calls AspectManager.translate(), so that would be the best entry point. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4086060#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...