The message is nothing to worry about, which is why it is logged at DEBUG level. When a socket is closed on the server side, an attempt is made to write a pair of bytes which are interpreted on the client side to mean that the connection should not be used. But if the client has already shut down ("java.net.SocketException: Connection closed by remote host"), then it doesn't matter if the pair of bytes can be written. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4199288#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...