I am trying to deploy a very simple EAR file which - for the time being - contains just one ejb-jar file and a bunch of dependencies. The application.xm dd contains just one entry for the ejb module, dependencies on the included libraries are declared via appropriate entries in the ejb-jars MANIFEST.MF
... Class-Path: spring-1.1.jar, aopalliance.jar, ...
<module> <java>spring-1.1.jar</java> </module>
OK, always do your homework before trying to raise an issue. Due to a bug in my build system the Class-Path attribute was not written into the Main Section, so JBoss rightly ignored it. It now works as expected.