I read an article by Ed Bott; in summary, if you regularly patch your software, you are much more likely to avoid virus infections. Yep, that’s it! Update and patch your software. In the article, Ed points to two major studies that show how patches can significantly help you avoid infections. Read the article at http://www.zdnet.com/blog/bott/if-your-pc-picks-up-a-virus-whose-fault-is-it/4039.