Hey guys/gals just was wondering if anyone with a 27" imac was experiencing this problem. When my screen is a solid color like the startup gray screen for example. The bottom part of my screen is a bit darker than the rest. It looks almost as if there is not as much backlight there. If anyone has a chance if you could just restart your computer and when the gray screen comes on see if you you see a darker gray horizontal line across the bottom of the screen. I would really appreciate it! Thanks!