@paul If antiviruses are perfected in windows i wonder then why every now and then theres a new one causing havoc amongst users while on the other *nix end antivirus? maybe just for fun (sic) plus no new viruses every other day.
Popularity not withstanding, the architecture used by windows is what creates a very conducive environment for the germination, growth and propagation of viruses.
Then i wonder why a good number of windows anti viruses use *nix based utilities for boot up and virus busting?
..... my 2cents (im not starting a *nix vs madirisha wars)