Oh, one more thing that might help you:
In Glassfish 3 you can either package your EJBs directly in the Web Application WAR file, then you don't need to use local interfaces.
But if you package your EJBs in an EJB JAR, then you have to use local interfaces, and you need to package your local interfaces in a separate EJB Client JAR. In GFv2 you could package the local interfaces in the same EJB Jar with the EJB implementations, which is certainly not clean design but it was OK for us.
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