My D2 finally came in and I picked it up last week. So far I am very pleased with it's performance and operation, great audio and video quality, and no bugs have shown up for me. (However, I am only using component video connections due to having a non-HDMI display, so I guess for now I am immune to HDMI bugs.
The audio quality is excellent, probably the cleanest, most detailed sound I have ever heard from any processor. During one of the scenes in "The Last Samurai" when Tom Cruise was stick fighting in the rain, my wife said, "It sounds like it's raining in the whole house!". She was right, it did. Despite the excellent detail, I would call this a "neutral" sounding processor, as I don't think it adds any "color" or "brightness" to the audio at all. I also noticed that the mid-bass seems to have more kick than I have had in other processors.
As for video quality, it looks great, though I am still trying to figure out how to tweak this to my system. I have watched some SD DVD's through my Pioneer DV-79Avi, output at 480i and upconverted to 1080i by the D2, and they have looked very very good, much closer to HD than I expected.
The adjustability and tweakability of this processor is incredible. There are so many things you can set, and they all seem to have a good purpose. Anything I have ever wished a processor could do seems to have been thought of by Anthem.
As you can tell, I am pleased with the performance of my D2 at this point, and am not having any (component connection) problems to report.