OK, after doing some more debugging and searching through the archives, I found the error in the OILServerILService run method. A previous posting to this forum said this was fixed in CVS in October, but I am hitting this bug in the 2.4.4 version of JBoss, released Dec 29. Did this fix just not make it in that version, or was it somehow overwritten?
I think the JMS server already hung. Can you check server log and look for "Could not initialize the OILServerIL Service"?