On one particular system, the system event log is filled with dcom errors.

DCOM was unable to communicate with the computer NPV1 using any of the
configured protocols.

(NPV1 being my main novell file server)

I reinstalled the client. It was 4.90sp2 now it's 4.91sp1. No change
in the situation. OS Is Win XP SP2 with all current updates.

Any ideas?