Exactly what I meant. The only reason it COULD be useful is if there were some kind of compatibility problem or some security problem actually caused by an update. Both of those kinds of things actually get fixed later by another update from Microsoft themselves, making the "feature" useless.
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AMD Athlon 64 x2 5600+ ~2.9 GHz
XFX GeForce 9800 GTX+ 512 MBs
2 GB DDR2 ~800 MHz