All LCD's have non-uniform backlighting to some degree. It's just a question of how large the brightness difference is and whether it is noticable to the human eye. My 46XBR2 for example, is very slightly brighter in a couple of the corners but this is only visible (barely) with no input, the lights out, and brightness and backlight cranked. At normal settings, even in the dark, it is not visible. I don't consider this a defect in my case. In the case of someone who had more severe backlighting issues, it might be different. My point is, a lot of people have unrealistic expectations about what this technology is capable of. Lumping all backlight uniformity issues together is ridiculous, since it is present everywhere and the more minor issues are expected and are NOT defects.