I just switched to a Mac after filing at $21,000 lawsuit against Dell. Maybe two weeks into my purchase of and Aluminium MacBook, I spot something that looks like dust under my screen. I have tried scratching and nothing is there, as well as glass cleaner and a microfiber cloth. But it doesn't appear to be a dead pixel, as it's there when the screen/MacBook is turned off. It even looks like it's under the screen. Has anyone else experienced this problem? It's in the middle horizontally, but more towards the left of the screen, yet still enough to be prominent.