hr-22 very brief audio drop

[dancrouse]

I having occasional audio drops with my hr-22. These drops are only for about 1 second, so it isn't that big of deal. During a typical "24" episode it will happen 4 or 5 times. It also seems to happen during intense action scenes with there is a lot of noise. Also, I rarely watch live tv, so this may be a DVR issue. Any ideas.