Anyone with TIVO (especially the Directv one, mine is the Hughes 99 dollar deal model) notice any audio hissing when watching TV? It seems to be more prominent on certain channels, such as my local WB, History channel, while others are less prominent. I just have the audio hooked up to my 24 inch Toshiba, not any stereo system. I've tried turning on and off the various gimmick sound improvement options on the Toshiba TV (BBE, etc) and it doesn't seem to make much of a difference. Is it interference from the hard drive with the TV speakers or signal degradation from the satellite signal. It's also concerning because I'm thinking about getting the HDTIVO for my big room with the surround sound, etc, and I definitely don't want to fork over 900 bucks and deal with a background hiss in surround sound.