I've gone through hours and hours to try and fix this and/or narrow down the issues. I've now: - Replaced the TivoHD box (exchanged it at BB) - Used two working CC's from one of my S3's - Tried before the 8.1.7b patch - Tried after the patch - Tried tuning both tuners to analog channels (to see if it's processor related) - Tried tuning both to the same digital channel (using manual recording) - Tried tuning both tuners to the same HD channel - Tried using one CC All while using the exact same cables as my 1-year working S3 (same coax in, same HDMI, same power, same ethernet). And all get the same results - light to severe pixelation, ultimately on all channels (I've testing local SD's, digital only SD's, and premium HD's). Some are worse than others, but they all are pixelated. And it's all unwatchable. I'm guessing this is FIOS related, as I recall the S3 having FIOS problems early on like this. And I've ruled out the CC's, signal issues, and the TivoHD hardware. Otherwise everyone would be seeing these same problems. This is really lame, and really disappointing. I love Tivo (I have 7 now, and had 8 previously with DirecTV). I want them to succeed. But this is an unacceptable level of quality for even a new product. It's useless to me in it's current form. Shame. EDIT: Please read to my last post in this thread. It looks like a combination of things, including a bad CC, not following Tivo direction to repeat guided set up each time, not rebooting after each CC install/change, and a source signal issue. In any case - Now I love my TivoHD!