I think its better idea to use the task, it's more explicit and straightforward. The ANT documentation says it supports EJB 1.1 where as jbosscmp-jdbc.xml is for EJB 2.0.
Thanks for the info. It doesn't appear that ejbjar would buy me much with JBoss, anyway. It looks like that task is better suited for app servers that require additional work during EJB packaging.
I already had the jar task running before going down this rathole...
Correct. It's more useful for app servers that require you to compile EJB stubs etc.