I am using CIFS to connect to my NW 6.0 SP5 server. If I open up an Excel
spreadsheet off a mapped network drive, the file becomes corrupted. This
happens even if I don't save the file. I can copy the file to my local drive
and open it without corruption.

Any idea why this happens? Are there any CIFS settings that I can tweak?

I am using NSS volumes and CIFS.NLM 1.72 - July 6, 2005

I have read TID 10086048 but this article pertains to traditional volumes.