I don't have all the details, only that often when the user tries to save the file, they cannot and have to hunt down an admin to first see who has the lock on it and then I believe they just go to the offending user and reboot them.

I asked Dimitri, my counterpart at the sister mill, to join this thread. He has been lurking on the board but don't think he has a user profile. We'll see if he comes out of the shadows.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.