BTW, some instances of this exception are accompanied by message delivery failures: 2009-10-06 12:42:20,704 WARN [org.jboss.jms.client.container.ClientConsumer] Timed out waiting for last delivery 1 got 0 | 2009-10-06 12:42:20,709 ERROR [org.jboss.jms.client.container.ClosedInterceptor] ClosedInterceptor.ClientSessionDelegate[1q1-nuttig0g-1-i1bc6f0g-oiap2t-100j3] | : method postDeliver() did not go through, the interceptor is CLOSED | 2009-10-06 12:42:20,709 ERROR [org.jboss.jms.client.container.ClientConsumer] Failed to deliver message | javax.jms.IllegalStateException: The object is closed | at org.jboss.jms.client.container.ClosedInterceptor.invoke(ClosedInterceptor.java:157) | at org.jboss.aop.advice.PerInstanceInterceptor.invoke(PerInstanceInterceptor.java:105) | at org.jboss.jms.client.delegate.ClientSessionDelegate$postDeliver_1255239194451907669.invokeNext(ClientSessionDelegate$postDeliver_125523919445190766 | 9.java) | at org.jboss.jms.client.delegate.ClientSessionDelegate.postDeliver(ClientSessionDelegate.java) | at org.jboss.jms.client.container.ClientConsumer.callOnMessage(ClientConsumer.java:253) | at org.jboss.jms.client.container.ClientConsumer$ListenerRunner.run(ClientConsumer.java:1043) | at org.jboss.messaging.util.OrderedExecutorFactory$ChildExecutor.run(OrderedExecutorFactory.java:120) | at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:651) | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:676) | at java.lang.Thread.run(Thread.java:595) The delivery failure occurs after a 30 second timeout from the moment the message had been sent. This isn't harmless anymore, as it causes 30 second long process executions and then failure sent back to the client. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4258849#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...