Hi all: I start "all" server on two linux servers, and deploy org.jboss.mq.il.ha.examples.HAJMSClient code into its. When i follow the wiki document ("http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossMQHAOverview"). 1st step ok, 2nd step ok, but when i shutdown the master node, and reconnect the JMS connection. Then invoke the registerDurableSubscriberAndReceiveMessages method, system would tell me cant' find UIL2XAConnectionFactory! what's the problem, Help me!!