October 9, 2007 Patch

Patch notes

Improved driver checks for various cards that can have problems with specific driver versions
Various updates to Russian and Polish localization
Fixed loading screen and intro movie showing up on Windows Vista with full screen AA
Spies can no longer reload their Revolver while cloaked
Demomen grenades now collide with players and Engineer buildings after the first bounce, but still won't explode on contact
Improved startup network initialization to catch issues with server firewalls popping up in the background
Fixed a sound corruption issue which could cause audio popping
Fixed achievement storage issues that caused a problem with the Head of the Class achievement