Yeah ours does that too. We use: Version: 4.0 Build: 0.0 (6/21/2007 3:06:24 PM) OS Version: Microsoft Windows NT 5.1.2600 Service Pack 2 CLR Version: 2.0.50727.832 We also have issues with clients who get timeouts from the server and then logoff. It seemed to be related to the idle timeout, but after further investigation it wasn't. They are on