Ever since I bought this samsung HD DVD player model number HD841 which upconverts to HD. I've been getting this grainy looking picture, almost as if you were going frame by frame and all these tiny little blocks were jumping all over the screen. I've been reading some post and one guy hit it on the head about DVI cables could be the one to blame? I'm running I believe THX gold tips? It's so bad I couldn't finish watching the movie! I've had nothing but problems with my receiver and speaker popping noises and now this.... I'm so ready to go back and watch my 27 tube! My TV is a Mitsubishi HD RPTV 42 widescreen. What on earth could be the problem!?? :( Please help :(