I am using .NET multithread (100 threads for 200, 000 records) app client to perform stress test on JBoss server. once i hit this msg & 5 records were lost when allocate default 512MB max memory, with all showing this msg: "org.jboss.mq.SpyJMSException: Cannot authenticate user; - nested throwable: (java.io.IOException: Client is not connected)" http://search.yahoo.com/search?p=%22org.jboss.mq.SpyJMSException%3A+Canno... once i hit this msg & 2 records were lost when allocate 1GB max memory, with all showing this msg: org.jboss.mq.SpyJMSException: Cannot authenticate user; - nested throwable: (java.net.SocketException: Connection reset) http://search.yahoo.com/search?p=%22org.jboss.mq.SpyJMSException%3A+Canno... any idea? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4188959#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...