How to prevent viruses

The Register has an article all about the resilliance of various operating systems to viruses.
I work closely with Linux, and nay-sayers of Linux often say that the lack of viruses are down to its obscurity not its security. This article shows why this isn't true.

Now one or two of you may know the difference between operating systems, or what one is beyond the fact you got one with your PC. In which case there will be another article along in the next 24 hours or so. :-)

The link was found on slashdot.