I have the hr21-700, and ever since the beginning, the menu navigation and channel changing has been slow as hell. And now recently, the dvr is starting to be unresponsive to remote commands. Video playback is choppy and pixelated at best and occasionally freezing up while watching recordings. I've even called and asked directv what's going on and they say that the unresponsiveness and slowness is because of "better" technology on the HD dvr's. I'd like to call myself a tech geek so I don't believe their bs. They are probably just trying to cover up the bad and inefficient software programming. /rant I just had to get that out of my system. Sorry if I missed a rant thread. Anybody else having these problems?