i recently purchased a samsung hdtv. i tried connecting it to my early 08 penryn mbp with a dvi to hdmi cable. i'm mirroring by the way. overscan is turned on. it works fine when i use 1080p, but there are black bars on the side. tried messing with the tv settings, but nothing helped. i'm sure the problem lies on the mbp side. how do i get rid of them? i don't have this issue when i boot into windows 7 on my boot camp partition. any help would be greatly appreciated. here's a picture. sorry it's a bit dark.