I WILL DESTROY YOU COMPUTER

I was working on three icons last night for two different LIMS.  I was spending a lot of time on them.  I had done many many stages of background creation, coloring, textures, etc.  I Photoshopped for about an hour before I got too tired to work and decided to go to bed.  I just left Photoshop open, and it didn't occur to me to save the PSDs.

I didn't have time to get on the computer this morning.

Came home from work, made dinner, reading flist, la dee da, I will finish those icons.  Wait.  Photoshop isn't open.

COMPUTER INSTALLED UPDATES ON ITS OWN AND RESTARTED.  ALL LOST.