I have horrible light leak in my screen again and plan on bringing it in for a second replacement. The first time I brought it in they had the laptop for about 3 days. The light leak wasn't as bad after the fixed it by putting in a new screen, but over the course of a year it has gotten much worse. I am curious what you do with your laptop before you bring it in and drop it off for a few days. Do you backup everything to time machine and then install a fresh OS system that deletes all your data on the computer. Then when you get it back fixed use time machine to load your original data? Also, I think I am having problems with my video card as well. I am on the unibody 15" macbook pro. Sometimes there is a glitch where the screen goes out for a partial second or becomes distorted, this happens ever hour or two.