Perhaps I'm a little paranoid right now, but I think someone has been attempting to or succeeded in hacking my MacBook Pro. It has random slow downs and won't go to sleep sometimes. It's on a school network, so somehow I wouldn't be surprised if someone managed to find a way to get into my computer. Any simple command line or an app that check who's connected to my computer? Firewall is up and file sharing is off. Or perhaps my computer is slow for other reasons. It's just particularly odd when I get color wheels with Safari with random webpages and the fact my computer won't go to sleep, but no apps are running. I can repeatedly hit sleep, but nothing will happen. At one point, my screensaver would not activate the screen lock.