AMD Catalyst Driver 11.5a Hotfix Feature:

Includes performance optimizations and resolves various quality issues for the upcoming release of Brink
Resolves transcoding video lagging issues seen when converting multiple H.264 clips to MPEG2 Blu-ray video
Resolves the intermittent mouse cursor lag issue seen by some users
Resolves intermittent flickering issues seen in the following applications in a system using an AMD Radeon HD 6600 series graphics card with DDR3 memory and running in DirectX 9 mode:
Civilization 5
Dead Rising 2
Fallout 3
Mafia 2
NBA 2010
ShenGuiChuanQi
Starcraft 2
Warcraft III
World of Warcraft