I have a Windows Server 2003 machine setup with Terminal Services in Application mode running in a 2000 Domain. Just recently the machine has stopped responding to network requests periodically. I can run a continuous ping and the server replies, but whenever I try to terminal into the machine, it stops replying. The only errors in the Event Log are ID's: 11194 and 4321, relating to not being able to update the DNS resource records. Any ideas?