Hey I haven't tested your stuff, but the performance notes seems weird. I've done some work on a message based application using RMI (=chat), and I managed to easily get a throughput of 15.000 messages per second. Your throughput of only 400 seems very low. Any ideas on why? regards, Rickard -- Rickard Öberg Email: rickard at telkel.com http://www.telkel.com http://www.jboss.org http://www.dreambean.com