eWEEK.com had this article Thursday. Looks like the folks that are affected are those that use their MS/Windows CD disk to do a repair on corrupted files. Looks like the update process strikes again. Today is just Thursday, wonder what we will be told tommorow?
Updates quietly deployed by Microsoft in July and August could prevent Windows XP users from installing up to 80 recent patches. Microsoft officials say they are investigating reports that files the company deployed this summer prevent Windows XP users who run a built-in "repair" function from installing as many as 80 of the company's latest security patches. WWW Link