I fixed an issue in QueueImpl that might be causing this, but I can't commit yet due to other changes. If you want to apply the fix yourself locally, add the following synchronized block in DeliverRunner in QueueImpl.java | | private class DeliverRunner implements Runnable | { | public void run() | { | // Must be set to false *before* executing to avoid race | waitingToDeliver.set(false); | | //must synchronize | synchronized (QueueImpl.this) | { | deliver(); | } | } | } | | Without the synchronize block messages can get lost and get delivered out of order View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179715#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...