I just went through a long thread about this behaviour but it was mainly about Bluecurve PVRs and is about a year and a half old now.

I've posted about this before myself. Lots of quick audio dropouts, sometimes the video is affected, for like a second or two. Long enough to miss several words in a sentence. I have a Gateway PVR still. A friend has a PVR one generation before Gateway and she has the same problem. Another friend has Bluecurve (wireless) and he has the same problem.

This has been going on for years. Anyone else having this issue? I'm in Thunder Bay Ontario.