Okay, well I had my Mac on my lap today and I was looking at some images I had drawn. She wanted to see them too, but at her speed, so she tried to grab the computer from my lap. What she ended up doing was pressing on the LED LCD with her thumb. Now, I was using iPhoto's full screen function so everything was black, and what was left when she removed her thumb from my screen was a white spot where it had been. Now, it went away after a few seconds and returned to normal. I can't see any defects, or dark spots, but I could be wrong, and I'm paranoid. Do you think she may have somehow messed up my screen?