Microsoft supports OEMs having the flexibility to decide who manages security certificates and how to allow customers to import and manage those certificates, and manage secure boot. We believe it is important to support this flexibility to the OEMs and to allow our customers to decide how they want to manage their systems.
Get back to me when Dell includes the certificate I use to sign the Linux kernels I compile here.
This only allows other companies that offer proprietary OSs that run on x86 PCs to try to persuade OEMs to include their certificates in the trusted certificate list. It's great news for... mostly nobody.
source: http://blogs.msdn.com/b/b8/archive/2011/09/22/protecting-the...