Last night I was watching a show in HD on the NBC affiliate here in Denver (KUSA, Channel 9). I heard a small pop and, suddenly, the picture changed (from 1080i) to pillar-box format. Mind you, this is the same channel that continually has problems with their HD broadcasts and does not broadcast their programs in DD 5.1 (reported in other posts). I am assuming that this is an issue with the local affiliate and not with my HR20. Is this a safe assumption? Has anyone else experienced something similar to this? What about those of you in the Denver metro area?