My new Toshiba 57h81 is great in every aspect except for this very annoying problem. Basically (as described in other threads I've seen on this forum), whenever there's a very dark scene with only a small amount of light, the light area combines with the dark area of the screen and projects a large glowing semi-circle across my screen. It's getting really annoying! I have a 4 year extended warranty through a very reputable local dealer (Abt Electronics near Chicago) and I'm wondering if it's worthwhile for me to schedule a service call with one of their technicians, or if that's going to be a complete waste of time. I'm not sure if this problem is something a service tech for a dealer could or would fix. I'd really like to get this problem fixed since everything else with the TV is tip top. Anyone have any thoughts on if I should call Abt for service on this problem or not?