Possible problem using emacs on mounted filesystem.

[glen stark]

Hi everyone.  

I'm not sure if this is an OS problem or an emacs problem.  The problem 
only manifests itself for me on emacs, so I'm starting there.

I have a folder on an older linux server that I mount with the command:

sudo mount -t cifs -o username=xxx,uid=xxx //pdxenlin66/home/stg xenlin

I use emacs to edit the file.  I edit fine, but when I save the file, the 
next time I try to edit the buffer I get the message "X changed on disk; 
really edit the buffer?".

Does anyone have any idea what's going on here?  This is the first time I 
have such an issue.

Thanks,  Glen