server authentication keeps dropping

[Marcel]

I've been baving a very annoying problem between XP and
win200 server. After a random amount of time users loose
their network authentication and loose access to the
systems resources, but are still connected to the network
and can navigate accross the network including internet
access. If the user trys to access server resources they
are presented with a logon dialogue box, they type in
their user name and password and then recieve a message
saying that they are already logged onto the server. the
user needs to loggon their PC and the loggon on again.

When the Server was NT4 server and XP workstations we
didnt have this problem.
Does anyone know what the problem is and how to resolve it
thanks

 

[Marina Roos]

Check the ipconfig/all on the clients. Does everything point to the
server-IP? Put the XP nics on anything but autosense.