thanks thomas, i tried to insert my interceptor to one of the existing stacks in ejb3-interceptors-aop.xml but that started throwing NullPointer exceptions. what i want to do is intercept ALL stateless bean calls on the client and the server. i used the existing stack called StatelessSessionClientInterceptor and Stateless Bean but that as i said ran into exceptions. i'm not sure if the order of interception matters. did your work involve intercepting all beans or one particular bean calls. thanks F View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977919#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...