I had the same flickering problem on my HR24-200 and blank guide with menu tabs in the wrong places and weird sizes. I also got two dark gray bands remaining after I exited the menu. It didn't occur until Monday. The guide was fine all day Sunday.
Yes, and there is a slight yellow edge to the D in HD. Also, when selecting a channel from the guide, the banner background turns black before viewing the channel.
H20-100