Ok a few minutes ago, I turned on my mac book and my mouse curser was jumping around everywhere. I thought well maybe I need to let it load a bit to get caught up since I had just turned it on. Anyway, I let it go... but all by itself it was going around clicking stuff and opening page in a sporadic kind of manner and opening the right click menu a lot. Like I let it go and it clicked on about this mac. Then it clicked on safari and went straight to my gmail. Then it clicked on an old junk message and right clicked. It was just jumping around doing stuff like that. So I tried to log off the account but had to really fight with it as the arrow kept trying to do it's own thing. But anyway, I hit sleep mode instead which you need my password to get back in. I waited to see what it would do and it seemed like it still wanted to jump around the screen. Anyway I wasn't about to put my password in so I pushed the button on the laptop to turn the computer and turned it back on. It's not doing anything now and I'm able to have control of the mouse curser and visit sites I want to. Anyway, what happened? What should I do? I have a macbook pro, it's about 3 years old.