Ummm... I wouldn't call it "fixed". You better run that machine through http://housecall.trendmicro.com
for both spyware and viruses. I crack on NAV all the time because I think the only difference between a computer with NAV installed and one without NAV installed is that the one without runs a lot faster, but in your case it is trying to do something, and you'll want to get that something taken care of.