We are working with a new server with Small Business Server. All programs are running fine on the old server, so we just reinstalled and copied all programs, including filemaker and the database. All works fine except when we change servers and connect all users. Filemaker starts freezing and this problem escalates. Even in restarting the server, the problem persists. Only after shutting it down and waiting a while will the problem dissappear. We made a sepparate network to try to isolate the problem, with computers that have never been connected to the old server, and we have not been able to duplicate the error. All works fine. So we think there may be something in the configuration of the pcs we are connecting to the old server or maybe with the switches. Any ideas? Almost all the computers are very old, running XP and Pentium II or celeron.