Firstly, apologies if this has already been addressed or has an easy solution. I couldn't find any information on it and it's becoming a bit tedious...

So while watching TV (on my Tivo, of course) while changing channels or something, the tivo unit will stop responding to the remote. Now take in mind Im just using the original remote that actually came with the unit. In any event, the screen totally freezes to black and the only way to get it going again is to unplug the unit and restart it that way. This has been inconvenient, but I had to do it 2 times today so now it's going from inconvenient to annoying and frustrating. Anyone else have this issue and possibly a fix for it?