I agree with Xeron. Besides, the issue is not the flaw in Windows, it's about Denial of Service attacks. Any server, regardless of OS, can fall prey to that.
People make a big deal out of Microsoft.com downtime, including every time the domain name points to the wrong address. These people don't really know how the Internet works. When my ISP changed my static IP, it took a week for me to access my site through the DNS. There's something called TTL (Time To Live), and all that crap.
Big deal.
Besides, I can't take that article more seriously until they at least fix all their spelling mistakes. ;-)