Get into your head that this does not normally happen. This is the first I have heard of this too. I have advised tons of people as well to delete that folder, and have never got any feedback about incompletes dissappearing

Also EVERYONE makes a mistake from time to time. Are you saying that you never gave some advise that backfired. If so, then what a boring antisocial life you must have.

And again. DOES OSX NOT HAVE PROGRAMS AVAILABLE THAT CAN FIND DELETED FILES AND RESTORE THEM????