Don't speak too soon .....
It's simply that folks like me with XP machines for the children, can no longer be arsed to report failed MS software to the news hounds.
Of course it didn't work for home users, but then I'll bet that they don't read the Register for one and speaking generally, wouldn't know that Windows Update had failed anyway.
The thing that I found humerous/interesting about this little snafu is that if you follow the links to use the Trouble Shooter, there is no help at all, nada, nothing. Well that was the scene a few days ago.
So the critical security patches can't be that important then ?