I received my iPad earlier today. The crispness of the retina display is incredible, it really makes a huge difference while browsing in portrait mode. I was setting up my old iPad 2 for a family member and kept thinking how fuzzy it seemed after using my new iPad. Unfortunately, I quickly noticed that the top left of the screen seemed a slightly different color shade. It was most apparent on white and grey backgrounds, such as the macrumor forum. I'm curious if I just received a dud, or if other people are experiencing similar issues. I've attached a couple photos to illustrate the problem. The photos were taken while in landscape mode, so it's the bottom left corner that's the issue.