Problem saving file

This is not a big issue but one that is a pain.

I have some files that reside on a network drive. I always get the following error message. The file has not been opened on any other computer. I can open it, save it and reopen on the same computer and still get this. I have hunted hi and lo for an answer but have come up empty. Something in the preference perhaps but I can't see it.

The issue is related to your network connection and time stamp.

Check out microsoft support for this issue : http://support.microsoft.com/default.aspx?kbid=324491