I'm not sure of the logic Gates is using, but he said yesterday words to the effect that viruses aren't bad, that they make Windows more secure than Apple or Linux. I heard this on Tech TV. It was said during a speech in England as he prepares to receive his honorary knighthood. It's nice to know he thinks Windows is more secure than Apple or Linux.
They suggested that maybe he should have said "eventually Windows would be as secure as Mac and Linux."