Hi all, Sorry if this question has been asked for the umpteenth time - I tried searching but found nothing... Anyway, I've just received my 27" iMac (2013 model), and, wanting to witness the beauty of the screen, went straight to googling for some 1080p videos. ...only to discover that the iMac apparently cannot display videos in 1080p?? As an example, when viewing this video: https://www.youtube.com/watch?v=p74VWuBJSS0 the highest setting I'm allowed to get is 720p, which honestly bums me out quite a lot because of this big, beautiful screen! The same goes for videos said to support the native 1440p resolution: At https://www.youtube.com/watch?v=p56_y43UuEk my max is 720p as well! I've dug up a bit of information on the internet, but nothing very solid about this. Which makes me wonder if it's just me doing something wrong? I'm hoping that some of the knowledgable and, occasionally, kind people of the MR forums might shine some light on this issue. If there's a problem, I got 14 days to return it!