Yeah, some issues with the new PhysX-package are showing up.
From older games (which use PhysX, even if it's the CPU-only libraries) not starting to second long-freezes in Borderlands 2.
If anyone got trouble with it, try reinstalling PhysX manually in the extracted setup-folder ("/PhysX/PhysX_9.12.0904_SystemSoftware.msi") or rolling back to an older PhysX-version.
I wonder though if it's the driver+PhysX-combination or PhysX alone.
As in - does this package have the same issues if you use it with an AMD graphics card (since you still need PhysX on such a system for games that use the CPU-only part of it)?