I have Time warner and our HD cable constantly is pixelated, sound drops out so much to the point i do just turn the tv off. The funniest thing was that I was just watching modern marvels on HDHistory channel and commercials came on fine then as soon as it went back to the program so did the sound and pic dropping out. I almost thought there may have been something wrong with our reciever or cable box at one point but i guess not.
It has been like this since I can remember and lately its gotten worse (they have also added a few new HD channels recently too) so I finally decided to call and I just got off the phone with the cable companys tech support and they said they will send someone out tomorrow. I dont know what the heck they expect their tech to do since its probably not something they can fix on our end but whatever.
I like how they will send someone out right away to fix a problem, But you have to wait like a month for them to hookup service. Either way your a paying customer