http://docs.jboss.org/jbossas/jboss4guide/r4/html/cluster.chapt.html | ... | In order for nodes to form a cluster, they must have the exact same PartitionName and the ParitionConfig elements. Changes in either element on some but not all nodes would cause the cluster to split. | ... | .. so this seems like a bug in the JBM, because it ignores the cluster partitioning described in the documentation above?! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4178973#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...