[jboss-user] [installation, configuration, deployement] jboss stuck in memory during redeployement

hi there, I am facing problem that whenever i try to redeploy e.g. an EAR file in already running jboss deploy folder, it stuck and in result of this the jboss stop responding, and i have to restart my linux server to free this stuck instance. its even not shutdown with "kill" command at linux prompt. But on the other hand when i start my JBoss sever with an EAR already deployed in it, it starts successfully but after that when i try to move that EAR with another new EAR file, it stuck. So for the time being i just shutdown my jboss and then place a new EAR file in its deploy folder and start it. kindly help me in the above issue, i will be very thankful to u. -- Regards, Saqib