It is too early to comment on Windows 8 and it's security features. I saw a lot of articles about Windows 8 Defender and its features. I think this will really become a threat to other Virus Guard Developers and vendors. I like the feature they use when booting the OS (saw an article at vpswebserver http://www.vpswebserver.com/windows-vps/is-windows-8-secure?). But my concern is will this slow the PC?

I like Windows 7 a lot since it is faster and user friendly. Windows 8 is targeting both Tablets and PCs (but in my opinion more into tablets). So people get a chance to use the same OS on both systems.