This is an strange phenomenon. You've got sockets and server sockets shutting down in four different places: 1. Remoting worker thread 2. Remoting bisocket SecondaryServerSocketThread 3. PooledInvoker 4. tomcat. Whatever is going on is clearly independent of Remoting, since the latter two systems aren't part of Remoting. I really don't know what's going on, so I'm going to make a couple of suggestions. 1. Talk to a system or network administrator - maybe they'll have an idea. 2. Post the question in the tomcat forum: "Tomcat, HTTPD, Servlets & JSP" (http://www.jboss.com/index.html?module=bb&op=viewforum&f=50). Maybe someone there will come up with something. I'm curious though: what are you experiencing other than these exceptions in the log? Whatever is going on seems to be significant enough to cause some pretty noticeable behavior. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4093775#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...