does anyone notice dim spots in random places on there glassy 17" macbook pros? is this normal? i found it most noticeable when on web pages with light colored back rounds and also when the machine first boots up, and you get that white/grey screen, then the blue screens. also when you change the back round to a solid color like grey or blue i can notice it very well. i guess what i am trying to say is that the screen does not look even in color and light distribution. can anyone tell me what dead pixels look like? would i be able to tell if i had some? i have never experienced uneven lighting on any of my previous mbps, but then again they were all matte screens.