I just tried to update a freshly-loaded system at work today (our purchaser obtained the install disc from a rather dubious source) and found that the Windows Update site now requires validation to allow the download of critical updates.

I'll bet there will be some very unhappy people trying to update their Windows installation very soon.

Has anyone had a legitimate install fail validation?
This will probably cause a lot of bad will toward Microsoft (again).

How long do you suppose before someone finds a crack for this?