I recently replaced the JBoss MQ with JBoss Messaging in a Jboss 4.0.5 cluster. Everything works better than before but I have a small problem.
Although the system processes messages correctly, the Queue JMX bean in jmx-console, shows that it hasn't processed any message.
The MessageCounter jmx attribute has the following value: 'Queue,Queue.ReactorEvents,-,-,0,0,0,0,-' on both nodes.
Message counters are off by default. You need to enable them via the JMX console.