Audio dropouts on LA locals?

I am getting so frustrated with the audio (and sometimes video) dropouts I get on my locals. If happens on both the SD and HD broadcasts, and whether I'm using HDMI or component, recorded or live.

I know others have seen this, I've matched the exact same dropout with other HR20 users, but my other standard DirecTV receivers connected to ReplayTVs don't have the dropouts.

So what gives? It seems like this is HR20 related since it doesn't happen on the other receivers, but if everyone else saw the same number of audio dropouts I did, I would think there'd be a lot more complaining about it.