I've got a Windows 2000 Server on which I'm mapping shares from a
Netware 6 SP3 server.

It will work fine for a couple of hours and then I get the error:

\\servername_w is not accessible.

An unexpected network error occurred.

I've stopped and restarted cifs and it doesn't make a difference, if I

restart the server it will start working again.

I've logged NMAS and do not see any errors, there are two requests
to back with out any pauses and the last message from NMAS for each is

Successful login

I can post the log if you think it would help.

Does anyone have any suggestions on what to try next?