Just to circle back to the orginal problem with the new introspector as well it seems that this ReadLock - WriteLock deadlock issue only happens when using PER_INSTANCE aspects as well since it is occuring in the generated InstanceAdvisor for the advised class. What causes the version of the parent to the advisor to change, to cause the doRebuildForInstance method to be called? | public void checkVersion() | { | if (needsRebuild || parent.version != GeneratedClassAdvisor.this.version) | { | doRebuildForInstance(); | needsRebuild = false; | } | } | -Pete View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213904#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...