Our ABB HD reception story: When we first got HD service, 2 of the channels would not come in at all, and several of the others were pixellating (breaking up) quite often. I called ABB and had actually scheduled a tech to come out to look at the problem, when something that the ABB Customer Service rep said made me think...
I looked at the connection running from the wall to the TV, and discovered a splitter on the cable that had been there for a long time that I'd forgotten about and no longer needed. I took the splitter off and connected the cable directly. (I know...duh. But I'd never even thought to look at that, for whatever reason, until the nice CS rep mentioned something about splitters when I called.) Anyway, long story short, once the splitter was gone, so were all the reception problems to our HD channels! Now they all come in just fine, clear, no more breaking up. I called ABB back and canceled the tech's visit.
For someone who's not necessarily a "techie" type of person, I felt so good because I fixed the problem myself. (Well, with a little help from the nice lady at ABB CS as well! If she hadn't mentioned it, I may have never looked at that connection and discovered the problem.)
Just wanted to mention it, for those others out there like myself who might not be quite as tech savvy.