I see following error when shutting down the server:

16:50:25,337 INFO [TomcatDeployer] undeploy, ctxPath=/jbossmq-httpil, warUrl=.../deploy-hasingleton/jms/jbossmq-httpil.sar/jbossmq-httpil.war/
16:50:25,376 ERROR [giop] unexpected exception during doWork
java.lang.NullPointerException
at org.jacorb.orb.etf.StreamConnectionBase.read(Unknown Source)
at org.jacorb.orb.giop.GIOPConnection.getMessage(Unknown Source)
at org.jacorb.orb.giop.GIOPConnection.receiveMessages(Unknown Source)
at org.jacorb.orb.giop.MessageReceptor.doWork(Unknown Source)
at org.jacorb.util.threadpool.ConsumerTie.run(Unknown Source)
at java.lang.Thread.run(Thread.java:595)