So I was watching some youtube video on my 2009 late macbook unibody and all of a sudden I couldn't move the mouse cursor much. I kept trying but it hardly moved or didn't move at all. left and right clicking worked. I could control tab to another program and there was no lag on the macbook itself. Finally I got frustrated and plugged in a usb mouse, closed safari and restarted my mac. Instead of the apple logo popping up during bootup, i got a weird symbol, like a do not smoke circle with a cross except without anything like a cigarette behind it. After about 30 seconds, it went to a screen that said install os x. I quit that and chose shutdown. Then i booted up again and after a long bootup, about 60 seconds instead of the normal 20, it got to the regular mac os desktop with the trackpad working okay. Does anyone know what might be going on with my macbook. Is it about to die? The SSD and HDD don't seem to be making any unusual noises and the speed of normal operations seems normal. Thanks.