I found out what was happening. I should have mentioned that my ViewserverJMXNotificationHandler extends from ListenerServiceMBeanSupport which in the the init method subscribed to Mbean registeration type | private void init() | { | // just pickup a unique object | this.myHandback = new Integer(Integer.MAX_VALUE); | | // allow only registration events | this.myFilter = new NotificationFilterSupport(); | this.myFilter.enableType(MBeanServerNotification.REGISTRATION_NOTIFICATION); | } I was avoding to implement all the subscription and notification methods which are already provided by the ListenerServiceMBeanSupport. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981004#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...