anonymous wrote : [4.2.3.GA (build: SVNTag=JBoss_4_2_3_GA date=200807181439)] Going by this build date, it looks like you are using the JDK1.6 version of JBoss-4.2.3 GA. However you are using it with a JDK 1.5: anonymous wrote : | 13:43:02,179 INFO [ServerInfo] Java version: 1.5.0_16,Apple Inc. | 13:43:02,180 INFO [ServerInfo] Java VM: Java HotSpot(TM) Client VM 1.5.0_16-133,Apple Inc. To fix this, you have 2 options mentioned here http://www.jboss.com/index.html?module=bb&op=viewtopic&t=143822 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187314#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...