I've had a bizarre series of events with my 722 and 622 units, and would appreciate any help. First last week, ONLY while playing back DVR recordings, the 722 starting dropping audio, then freezing video, then both would unfreeze, but be unsynched. A brief pause would synch them back up. Then after a few days, after that happening more and more frequently, the unit would then just freeze and lock up completely, requiring a power reset. After rebooting, recordings would play normally for a short while, but then the whole cycle would repeat. I called Tech Support yesterday, and she had me do a hard boot. When it came back up, now hitting the DVR button wouldn't bring up the playlist at all, and pausing live TV won't work. No recordings are accessible; it's like the hard drive is toast. Dish is sending a new unit, but I lost 100+ recordings. The unit was 2 months old and had worked perfectly until now. All it can do now is play live TV, which seems to be working fine. So today, the very next day, my 622 which I've had for 2 years starts with the audio dropouts. DVR recordings seem to play fine otherwise, but when I go to the program guide, it can't see any content more than 90 minutes or so out. When it tries to download updated guide content, it freezes before completing the download, and then reboots itself. So it can't update the guide, and if I try to record even a current program playing, it says it can't because it can't access the guide. So now I can't record on the 622 either. Now, I have to figure the odds of a 722 on one TV and a 622 on a separate TV, one 2 months old and one 2 years old, both crapping out in the same weekend, have to be pretty small. Check switches on both units ran fine. Dish's tech support has been terrible. Four calls so far, and no one knows anything. They just keep running through checklists, and don't even seem to understand when I describe the problem (one tech support lady told me she's never even owned a DVR herself!!) I asked to speak to Advanced Tech Support, and they told me that doesn't exist anymore. (I've been with Dish 10+ years, but haven't had a problem like this in awhile...) Any ideas?