The most recent problem was that wtp is still too restrictive. It did
not like our seam 1.2 jboss-seam.jar file. It refused to parse it
because it had no deployment descriptor.
When given a deployment descriptor with proper ejb 3.0 tags in it, such
as interceptors etc, it puked because it didn't understand them.
THe solution is to patch jboss-seam.jar and give it a skeleton ejb 3.0
ejb-jar.xml file.