My laptop is suddenly having major issues. Macbook Pro, got it slightly more than two years ago. I was gone until Wednesday evening, since then it's been having these problems (occurring as I type). Basically, it will freeze at the slightest thing for over 30 seconds... sometimes I'll get the pinwheel, sometimes it just freezes. I've tried closing applications, et.c but nothing works. My music stops playing, all that stuff. It's happened three tiems in writing this post (make that 4!). Please help!