I think I have a mac rootkit. When I opened activity monitor I noticed finder jumping around. I installed the latest updates and restarted. I see in activity monitor something open up and close instantly. I don't know what to do about it. Can someone help me. I don't know if Norton Internet Security supports PC or Mac rootkits. Will a wipe and reload help? And if it is on a USB drive. What then? Do I format the USB drive? Do I backup anything to disc or not?