I have the same problem, but probably with subscribing to topic (I am not sure, because I use queue and topic in one client).
This problem occurs after 1-2 hours of running without any problems. I tried to use "guest" and it ended with:
User: guest is NOT authenticated
Does have somebody any idea, why DynamicSecurityManager stops working with:
ERROR [org.jboss.mq.sm.file.DynamicLoginModule] Failed to load DynamicSecurityManager
javax.management.InstanceNotFoundException: jboss.mq:service=StateManager is not registered.