For the longest time I've wondered if my 6000 was defective, my antenna needed work, my tv was broken, whatever. I even changed out my 8vsb in hopes of some improvement. Well, I now have a Samsung SIR-T165 STB, and the verdict is clear. I'm splitting the same antenna for both. When the pixelating smear/tear/lockup occurs on the 6000, the Samsung is always sailing along A-OK. So, now I know. They're both hooked up for A/B. The STB is hooked via DVI, but I don't think that is a factor.