I have had problems with all three of mine over the years. Even without issues, it is the worst interface ever invented for a DVR (and it was the first one I ever used). There are no simple tasks. Everything requires mutliple tasks. Even something as simple as turning the thing off and on requires several buttons and several scrolls through a menu. Flipping back and forth between a recorded show and a live show also requires two buttons and a couple of folders (on the HR you just press the PREV button). These are only a couple examples. I can create a list of everything that is more complicated, but I would take up this entire page and most of my day.
I seriously do not see why people are in love with the TiVO. There is almost nothing it can do that the HR cannot, and the HR can do a lot more and is much easier to use (again, I have been using the TiVO longer).