I live in Duvall WA. Our cable provider is Broadstripe. We have two cable Tivos: one is an HD and the other is an S3. On both of them we frequently see what appear to be sync issues in recordings. There will be some blocky artifacts, then the image will freeze or go black for a few seconds, and then some more blocky artifacts and then the recording will continue playing. Both Tivos get the same behavior. Generally this will happen 1-3 times during any typical one hour recording. It happens on both SD and HD channels. If it would help I could probably post a cell phone video of this. The cable company had a guy out a while back who said our signal strength was good and suggested that the only thing they could try is to replace our cablecards (we have two in each Tivo). Any other suggestions? Is there any way to diagnose what's happening and why or should I just ask Broadstripe to replace all of our cablecards?