Okay, putting my two cents in, I experienced the same problem and you may want to run Avast to isolate a Trojan horse which is capable of disabling NAV as well as causing general havoc. My situation was a downloader Trojan Horse picked up from a freebie web site, you may want to backup and reinstall if you can't find a particular solution to your problem. And definitely get Peer Guardian...plus, I'm a girl, have years of partying experience, let's go global with this thing!

bpmax: Animals usually don't fare too well at parties, there was an incident once with a goat, a midget and a disco ball, I was acquitted of course...LOL! But you're welcome anytime, from one black sheep to another!