I think that fact that your network card is directly hooked up to the DSL modem is the cause of the problem. Running the 'all' configuration assumes clustering, and I think that either the modem or your DSL provider doesn't like the network traffic generated by the clustering. Try putting a router between your PC and the DSL modem (which is a good idea anyway because most routers have a built-in firewall). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3960701#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...