I've had the Sci Atlanta 8300HD for about 2 1/2 years now and the performance is just getting worse and worse. The channel changing is sometimes slower than the 4200HD was and when i use the guide to try to find a program to record it is a hell of a lot slower than the 4200HD. Monday I'm probably going to bring it back to the Cablevision store. I just wanted to know if anybody else is having similar problems, just so I'm not the only out there whose having these problems.