Microsoft said that the site had been subjected to a denial of service attack, according to Network World Fusion, but it wasn't anything to do with the Blaster worm or the power down in the US.
We thought initially that Microsoft had removed the page, which was accessible earlier this week, to avoid it being deluged by attacks launched courtesy of the Blaster worm that's made waves all week.
Apparently not.
If you click on the "Windows Update" button on the menu in Windows 2000 or Windows XP, the update page still comes up, but with a slightly different address. ยต