I've a LAN that has 8 computers running Windows XP and only one (Computer A) running Windows Server 2003.
When computer A boots, it shows up in all computers' Workgroups, but after 15-30 minutes, it disappears from the Workgroup in all computers, including itself. However, files can still be transferred from and to A via full path shortcuts and network drive maps still work.
I don't know if this has anything to do with the problem or not, but if that particular computer is turned on while the LAN cable is plugged in, it doesn't connect to the network, but it connects if the cable is plugged in after the computer is run.
Any tips why this is happening? Thanks.