Remove commons-logging.jar from your app. It cannot exist in scoped class loading scenarios currently.
Whoah. Quick reply. I'll try your suggestion, which I take to mean that what I had done to jboss-app.xml was approximately correct.
Not completely successful. In fact, all sorts of horriblness in at least one app where it decided it could no longer find javax.sql.datasource
question though, why do it by hacking jboss-app instead of setting globally per instructions at