So I've had my wi-fi 16 GB iPad 2 for about 6 months and out of no where today, I tried to play a video on YouTube with safari, and it just crashed! And now every time I try to play a video on any of my apps. It crashes! Everything else works great. It's just the QuickTime player that's not responding or something. Anyway I tried rebooting and everything and nothings working. How can I fix this?