Oh, this reminds me of something I wanted to post a topic on but never did for some reason.
On my computer at work, my company installed Norton antivirus on every computer and it periodically does full system scans when I'm not at work*. Every once in a while, it'll turn up a malicious cookie or some kind of minor adware. I'm wondering, with antivirus programs that you pay for, do they make up thread just so you think you invested your money well? If not, that's kind of amazing because all I do on the internet on that computer is check my email, idly read MSN articles when I'm bored and sometimes surf Wikipedia.