i've had this trouble since i bought my set last october and still haven't been able to figure out what's goin on. I have a samsung hi-def 55" rear projection tv. and i have a denon 910 dvd player. i'm using monster component cables. now, when i have the player set at 480i the pic has more detail, the black is deeper but also the pic is grainier and if the screen is a mostly solid semi-light color, i can see a vertical bar of a lighter shade than the picture somewhere on the screen. when i have it set to 480p, the pic is smoother but the black is not as dark, detail is lost and the pic actually looks slightly blurry. can anyone explain this? thanks for any info.