My main computer here was 97% done with a unit and decided to stop working (CPU usage went to 0%). So I shut it down and restarted and what do I get?
WTF? I lose my 97% of a 183 point unit? Grrr...I don't see how it could just "disappear."

[03:16:21] Folding@home Core Shutdown: MISSING_WORK_FILES
[03:16:25] CoreStatus = 74 (116)
[03:16:25] The core could not find the work files specified. Removing from queue
[03:16:25] Deleting current work unit & continuing...
WTF? I lose my 97% of a 183 point unit? Grrr...I don't see how it could just "disappear."

