It seems I posted too soon.... Clearing the RD folder didn't REALLY help, it just seemed to for a day or two. Comcast was out yesterday to see why after I upgraded the drive with one from Weaknees, I lost HBO, Showtime and Encore from my cablecards -- now one works and one doesn't, but that's another story. I also mentioned the pixelation and the service guy (straight out of "Twin Peaks", by the way) kept reporting to his dispatch that my signal was too strong. He put a tap on the line and the pixelation seems to have dropped a bit, but not completely. I live in a 24 unit apartment building and he commented that the signal was probably boosted for that reason. On the work order, he wrote that the levels for the CPE (which I believe is "Customer Premise Equipment") are a high of +20.8 and a low of +23.9. I happened to have kept the work order from when the cablecards for the Series 3 were originally installed and those readings (a little over a year ago) are a high of +7 and a low of +3. I know next to nothing about the magic of digital cable, but a year ago, my picture and signals were perfect and now they're pixeled -- even after the new HDD. Anyone that knows cable TV: would an attenuator or two to bring the signal strength back down to the 7/3 range help with the pixelation?