What are some indicators that your PC (XP) has been/is being hacked. EX: I was surfing (MozFire) and the browser seemed to freeze momentarily. I closed and reopened, but when I ended my session I noticed my PC clock had frozen for an hour, I started session at 11:10. I ended at 1:05 but the clock read 12:09 until I closed the browser and started to open Task Master to research activity and then the clock updated. Is this a possible sign of hacking? This clock thing has happened before. What other signs might indicate hacking. I've downloaded Process Exp and Process Monitor but I don't know what I am looking for. Please advise.