> I know of no patch which caused all systems to shutdown, or refuse to reboot. Ahem, Russ, this is something of a bold claim, unless you stress the ALL :) There have been some deeply troubling patches in the past, I hope you're not trying to dismiss that. And about mis-signatures, may I remind you of the fact that a Microsoft certificate was wrongly released and signed by Verisign a number of months ago ? Enabling a world-wide auto-update feature does indeed seem much of a security risk to me. Regards, Stefano