I have been noticing pixelation and audio issues on playback of my HR20. I do not notice this during live TV. When I do a system check it says my dish may be mis aligned, but I see other posts stating that this is inaccurate. I am wondering if my trusty friend is getting old, or if maybe my dish got knocked out of alignment. It seems checking the transponders is not really easy to understand. How do I know which signals I should be getting through which transponders to see if the alignment is an issue? If not, are the symptoms I described above a sign that my hard drive is going?