Stealth Microsoft update breaks Windows Update on "repaired" XP
 

*Source: Tech-Ex (http://technologyexpert.blogspot.com...windows.html)*
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While Microsoft said the "stealth install (http://technologyexpert.blogspot.com/2007/09/microsoft-responds-to-accusations-of.html)" of updated Windows update files --- even when users had disabled automatic updating --- was harmless, it turns out it wasn't quite that simple. For XP users, if you happened to do a "repair" using a repair CD, you would no longer be able to use Windows update ... period.

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