If you just re-installed your OS or you want to make sure Direct X files are not causing you problems, you may want to grab this.
Contains the Feb, Apr, June, Aug, Oct, and the new Dec "Manged" DX Code.
"Manged" DX code is typically used by the most recent games that add some stuff that was not in DX9 before. Installing manged code does not alter any games running normal code. It's there in case a game designed the manged code calls upon it.
Now as far as I know, GW does not used any DX manged code.
Yea same here, it's bad enough that half the stuff that MS claims to fix adds a nice bunch of bugs, and makes problems worse leading to another patch. However I might have to update on this old pc since the card "works" better with updated files.