The notebook with Vista sp1, Novell Client 2 for Vista, MS Office 2003.

I m taking the file *.doc (size 45k) from my disk O - novell network drive, making some actions with this file and saving it back.
Now I m looking at this file and that it becomes lighter and now the size is 10k. And now its impossible to open it with word.

As a decision. I m taking the file to my disk C. Working with it, and puting it back to my disk O. That works but its not comfort way.

Have you met with such strange things?
What actions have i to do to aqquire the comfot back - work on my disk O.

Sorry for my english