Pulled my coveted 12" 1.5 ghz powerbook out of its bag, and it's has an annoying little opaque stripe about 3/4" along the right side of the display. It changes color from yellow to green. When I pinch the lower side of my display together, it goes back to the blue background color, but still has a distortion to it. Any ideas on what it could be? Thanks in advance for your help.