Yep. It is said that the biggest computer problem lies between your monitor and chair. When I was younger, I spent my days browsing Internet quite broadly, including torrents, porn etc. And I have seen probably 2 or 3 real viruses in my whole life (and I was using Windows all the time). Also when my friends ask me for help with their computers, blaming that there is a virus causing problems, almost every time the only problem is the user and not the computer.