About a half- dozen times now, my THR-22 will stop responding to the remote or the front panel. Twice, I've experienced this while watching a show. Right now, in fact, I'm watching a recording and nothing happens when I press a key on the remote. The front panel will blink, as if it recognizes that the remote is being pressed, but nothing will break this non- response mode short if pressing the reset button and going through the reset procedure. Another way it has happened is when I've done something innocuous, like press the Menu button. There's no rhyme or reason to it. Is this common, or some sort of defective unit?