Dunno what I did the other day, but I was working on a 1800-page
document in MS word when all of a sudden, the dialog box appeared:
"saving of autorecovery info is delayed" or something like
that.
then I had a feeling something was wrong, and then I press Ctrl-S
to save the file. WT... it complained "disk is full"?! I checked
the drive free space in explorer, only 14 GB used out of total
60GB, which isn't "full"... 
run scandisk, then try to save again, and still the same "disk
full" error.
and i noticed also, in the save dialog box, all the icons for the
folders on the left sidebar had ALL disappeared.
i had to reboot before MS word would act properly. lost 3 pages of
edits. and i still have no idea why it would complain "disk full"
on a disk not even half full. 
