I bought a Kobo Glo yesterday at Future Shop (Canada). It had a bright pixel in the lower left (and, yes, I'd removed the protective shipping film). I took it back and exchange it for another unit; this new one doesn't have the problem.
My guess: there's a non-glare coating on the screen that actually also dims the light; it's also the coating that gives the papery feel to the screen (a very different textue than what the screen has on the Touch). Pinprick defects in that coating -- possibly caused by dust when the coating was sprayed on, leaving a tiny spot with no coating -- allow the light to shine through at full intensity. It IS a real problem, it IS noticeable, and I'm glad I took mine back and got a replacement.
Overall, I'm very happy with the Kobo Glo.
Last edited by RobertJSawyer; 10-12-2012 at 04:24 PM.