JudasIscariot: Please try uninstalling and then reinstalling the game completely. Then apply the patch and see if that helps. If the problem persists, please contact our Support department. Make sure to give as many details as possible and a DxDiag. :D
oldschool: So there is a stand alone patch? I just noticed that my game (Painkiller) has been updated.
Yes. If you go to your My Account page and click on the Painkiller game box, you'll see a Universal Update link just under the link for the game's installer.
The patch decreases level loading times.