Advertisements I'm using optical (I've tried three cables), but I tried HDMI and had the same problem. As I mentioned in a post above, I didn't start noticing this problem when I was using a Panny digital receiver; I didn't notice it until I started using an Onkyo, so I'm thinking it has something to do with sensitivity of the receiver as someone above mentioned. Unfortunately, I don't have another receiver to try. I don't blame the receiver though because it's not there when I rewind. This makes me think that periodically, the Tivo processing isn't able to keep up with recording/output. This causes the Tivo to have a very short(i.e. millisecond) drop in signal outputted. The Onkyo may be extra sensitive to these drops causing it to switch processing modes and make it seem like the drop is in actuality a second or two instead of a millisecond (that probably wouldn't be noticeable). Just my speculation. Not too sure who can claim responsibility to fix the issue (Tivo, Onkyo, or Comcast for the signal), but I'm not holding my breath.