I had a problem with JBOSS which is peculiar. I had downloaded JBoss-2.4.3 from the site and using JBOSSMQ also. Iam working on linux environment. The size of JBOss when i was downloaded is 6.1 MB. It is fine and cool . I had run the JBossServer for nearly(200 times) and the size had become to 55mb. Iam using mysql as database.