JBoss 4.2.3 Hot Deployment does not work (worked with 4.1.x)

When i start JBoss 4.2.3GA i get this:

org.jboss.deployment.DeploymentException: Trying to install an already registered mbean: jboss.remoting:type=Connector,name=DefaultEjb3Connector,handler=ejb3
at org.jboss.system.ServiceCreator.install(ServiceCreator.java:103)

Then when i change any file (just an xhtml for instance) The Server shuts down. Instead it should just hot-deploy that file like it did with Kepler + AS Tools 4.1. But here it seems a full deployment is being done (Not just the file) resulting in a Server reboot

12:09:29,452 INFO [EARDeployer] Undeploying J2EE application, destroy step: file:/C:/server/jboss/............ear
12:09:29,452 INFO [EARDeployer] Undeployed J2EE application: file:/C:/server/jboss/..........................ear

Thanks for any help If this is not fixed, we cannot move to Luna. unfortunately i cant move to a different application server