Is this a Symposium 4.2? (I take it that you have a Web Client 4.5.) To follow up on what cgilmer mentioned, do you have anybody with a "classic" client that may be running reports (that is, not using the Web Client). Does your Web Client server have more than 1 NIC card? Both of those can cause your SCCS to lock up if there are errors in running a report, if the NIC card is set for DHCP, etc.