I won't debate the merits of Windows or Linux. All I wonder is how a company with a proprietary OS, which is rife with security problems (as has been evidenced by the plethora of "updates") can claim another OS has no security? That's the pot calling the penguin black, eh?
Seriously, I think the Linux development model is far superior to anything Microsoft could ever put together, simply because Microsoft doesn't allow tens, if not hundreds of thousands of people pour over their code for vulnerabilities. When you have 10,000 open source developers all working to improve every aspect o