Using aspects on No-Interface Session Beans (JBoss 6.0.0.GA) will cause in errors during deployment.
For details see follow Thread:
http://community.jboss.org/thread/164703
Because I did not know if it is a bug in JBoss AOP oder in JBoss 6.0.0 I posted it first directly in JBoss AS Discussion but now I will try it here and hope to get help..