When I earlier scanned my external HDDs with Rising Anti-virus, Rising deleted not only the viruses, but also non-viruses such as my Internet Favorites etc. Do most anti-virus softwares act like this? I have changed to ZoneAlarm Extreme Security now, and will soon use it to get rid of viruses. But I'm afraid the same thing will happen: it will remove also important personal files such as my Favorites. How can I prevent this?