Just searching through and saw this. I have the same problem, it seems like my HDMI connection drops out every 5 or 10 seconds while watching youtube. I get a glitch in the sound, then the screen goes black for a brief moment, I see snow on the screen for a split second, then the video comes back. Happens on many youtube videos but not all. I have the Tivo connected via HDMI to my yamaha receiver, and the receiver to my Sony XBR1 tv.