I've seen many people having similar issues to what I'm experiencing both here and on other sites including DirecTV's own forums. One person in particular had almost the exact symptoms I had, ordered a replacement from DirecTV and had the same issues with the replacement. I am not going to lose my recordings for no good reason. I have to reboot about once per day due to lockup. When it works, it works fine. No hiccups or glitches or anything else that would lead me to believe it's a bad unit. The installer used a splitter in the wiring closet (would have to check to see exactly what type and model) and of course a CCK. I have an HR21 in the bedroom which works perfectly. Never had an issue with it.