I recently went to cable. I have the cable card inserted into my Sony widescreen 30" HDTV. When I first started watching HD-HBO the movie was in 4:3 and the TV screen mode was correct. Later i noticed on the same channel it was then 16:9 on a different movie. The screen mode I used on the Sony was "full" which is to display the movie in it's native format. So I guess I can assume that HBO and Showtime do not upscale or convert movies for the HD channels? But no movies are originally 4:3 are they? Anyone else have this happen on these channels or know what's going on here? I don't have the problem with my Toshiba DLP but I keep it in auto format and it probably re-formats the movie and another difference is I'm using a DVR box on it.