The problem I'm having is that several times a day, my workstations drop from the network. This appears to be completely sporadic and nothing out of the ordinary is running when this occurs. Users who are connected to my Exchange 2003 server through Outlook get a delay in send/recieve and then it tells them the Exchange server is unavailable. They reboot and all is fine.
This doesn't only happen with my email server. It happens with my flie server and my domain controller as well. What could be the cause of this? I ran a packet analyzer and couldn't find anything out of the ordinary. All workstations are identical running XP.