i was wondering how the video playback of 1080p and 720p files compares between the x3100 and the gma950. i have a 2.16 mb with gma 950 and it seems to stutter a bit on some 1080p files. however i noticed that it seems to favour 1 core or the oother when playing back mkv files on vlc, while the 720p files seem fine. will the new macbooks play 1080p files? it would seem there is adequate processor powerso maybe its a limitaion of the video card. Does anyone have any luck playing 1080p files on the older 950 hardware?