I just found this thread after looking for people with the same problem. I got my 65VT50 from Cleveland Plasma back in October. It's an August 2012 build. I've been using the TV regularly since purchased and noticed the yellow blob on the right side of the screen about three weeks ago. It definitely wasn't there until recently. It's only noticeable on full white screens and is faint, but definitely there. I wonder if it is a result of the ABL kicking in, because when I throw my PC to the panel and move a small white box over the area there is no yellow. When I maximize the box to full screen, however, it shows up. Its not something I'm about to want a return for, but I do agree that when you pay over $3k for a screen its troubling to see any problem small or large. I hope it goes away with time. I haven't had the panel calibrated yet, but I'm not sure if that could fix it.