Hi, can you help me? Does JBossMQ maintains unique JMSMessage IDs for queues? It looks that queue is persistent but JMSMessageIDs aren't unique between different JBoss runs. Sequence is following under JDK1.3 on empty queue (dat file not exists): 1. Start JBossMQ server 2. Post message in existing JMS queue with property name='test' 3. restart JBossMQ server 4. Post another message in existing JMS queue with property name ='another_test' 5. Reguest posted message by known name property using queue browser created with message selector like: "name='another_test''" 6. Retrieved message will have JMSMessageID by which later this message should be acknowledged 7. When message retrieved for acknowledgement using JMSMessageID obtained in 6 it will be message with property name='test' instead of 'another_test' as expected Is it possible to workaround this problem? Looking for your help Max _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user