On Wed, 31 Dec 2008 00:21:59 +0000, Tom Francis wrote:

That seems to be going around - something about VISTA and Leopard or
whatever Apple calls it are built around the same platform or using the
same operating architecture or something. They mentioned it on CNBC
last week when I was listening and I was only half paying attention.

OS X is an overlay on Darwin, which is a Unix type OS. While rumors have
it that there is some Unix code in Windows, it is definitely not Unix
based.

http://en.wikipedia.org/wiki/Darwin_(operating_system)

Rumors also have it that the next Windows will be truly different, at
least for Windows. Reportedly, it will use a hypervisor for backward
compatibility. By the way, hypervisors are not new. When I absolutely
have to use that buggy, insecure, POS, operating system called
Windows ;-), I run it on Linux using VirtualBox.

http://en.wikipedia.org/wiki/Hypervisor