Sometimes the file will just erase itself off of the server.
Has anyone ever seen something like this before?
We currently have three files in one project that do this.
a quick thing to test. if you save the file to a local drive for a while, does the isbehavior cease? if it does cease, you've found the culprit. if it doesn't, you may need to look at the way AutoCAD is configured/customized.
Anything similar going on like that with your files?
I also posted regarding the -scalelistedit problem at:
When I cleared out the extra scales in the drawings, they stopped disappearing from the server.
We had one file with over 20,000 separate scales.
I've since spoken with those responsible, and have hopefully stopped that from happening again.
On the server, open a cmd window and type OPENFILES /?
Review OPENFILES if you're not familiar and use it to see what's locked up.
Depending on your AutoCAD version, Autodesk has something similar: WHOHAS. See Help.
Just a follow-up years later it seems.
It turned out to be a problem with scalelists. We used -scalelistedit to reset the scales in all of our drawings and files x-ref'd into them.
They were acting like a crazy virus that would grow exponentially every time someone opened or saved a file. The number of scales just got so big that the file would literally self-delete.