I have a user who cannot log in to one specific PC although he is able to
log in using other PC's the error message is

"The system could not log you into the network.

Make sure your name and connection information are correct, Then type your
password again."

I have tried using a full context login as opposed to using the client
Context settings, setting the server IP adddress as opposed to using the
DNS entry, and removing the tree from the settings, none of these worked.
Other members of staff can login to this machine from the same context
without any problems.

Looking forward in anticipation to your reply.