From The Article: Agnitum security experts have analyzed these new measures, and it is their informed opinion that these measures will actually cause more harm than good, for two primary reasons:

It will be more complicated for third-party security software companies to install and maintain their software on Windows PCs. In some circumstances, kernel patch protection may even block the installation of third-party security software.

It will be easier for hackers to share and use this new technology than for legitimate software developers."

Source: http://www.agnitum.com/news/kernel_patch_protection.php

This is bad. now i know i won't be getting Vista :P

Looks like it's just for Server 2003 x64 and XP x64.

i know but it will probably come to the 32-bit OSes. besides, x64 systems are nice and fast. no point in harming them :P