I described results here http://www.jboss.com/index.html?module=bb&op=viewtopic&t=138172.
Tests fails because jboss ebmedded dont opperate on many persistence units.
About http://jira.codehaus.org/browse/MECLIPSE-388 I patched plugin and jboss embedded is first on eclipse classpath ;) Very Important that maven classpath order is corected in maven 2.0.9 ;)
skajodte, thanks for reporting here! ;)