Mortal Kombat won't get out of the "start screen"...?

Ok, so i have the last mk game for ps3 and it won't effing start. it worked fine yesterday and all, but now i just put it in, and when it says press start, i press MOTHEREFFING start! then, the little circular thingy with the dragon appears on the right corner of the screen, starts rotating (as it is when something's loading) and then it just freezes. just like that. i can still hear the continuous "crowd" cheer, it's just the image that's frozen. i will kill someone if i dont play mk today, please. help this bored little girl... *hyper, ultra cute face* btw, the disk is not in the least scratched. i cleaned it like three or four times and it's THE CLEANEST IT WILL GET.