Something just happened that kind of has me worried. I was working on a spreadsheet when all of the sudden my screen goes black. I jiggle the mouse and nothing happens but after pressing the power button the screen came back on exactly where I was like it suddenly went to sleep or something. But it's not supposed to go to sleep if I'm using it and moving the mouse usually wakes it up. It also didn't gradually fade out like it does when it goes to sleep it just snapped straight to black. I also don't think it overheated because it was actually cool to the touch, it has been physically warmer than that in the past without problems.
So far (And hopefully totally) it's only happened once but it has me worried.