As of 1.0.x, JBossMessaging is not clusterable (Clustering isn't implemented yet). This is the next task in 1.2
we found the problems solution:
topic was published with 5000 millis timeToLive, but there was a differenc in system time of the 2 nodes in the cluster. Therefore the message had a time out on this node. Setting timeToLive to 0 resolved the problem.
TopicPublisher publisher = session.createPublisher(topic);
ObjectMessage message = session.createObjectMessage();
publisher.publish(message, deliveryMode, priority, timeToLive);
Clarification question. Are you using JBoss Messaging or JBoss MQ?
whom are you asking the question? Me? JBossMessaging. Gone those days with MQ!
we're using JBoss MQ with JBoss 3.2.