Hi I use the latest mod_cluster(1.0.2 GA) with JBoss 5.1.0.GA server(all) clustered mod_cluster configuration. My testing envirnoment is: I created a loopback network interface for testing and added 3 ip addresses on Vista. 1:192.168.1.101:http load balancer 2:192.168.1.102:jboss node1 3:192.168.1.103:jboss node2 I get 503 Service Temporarily Unavailable error by the following cases, and I must wait about 30-60 sec to the httpd begin to route the request to the nodes. 1.when all jboss nodes started and the ear deploy process is finished.(I rarely get 503 error if I delete temp/works directories) 2.sometimes when either node is killed 3.when I killed a node, and try to restart the killed node. after ~30-60sec it begin to work all cases. Do you hava any idea? thx. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4262110#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...