Running Radeon HD6800, Win7 64-bit Home Premium - cannot get rid of black border around the game on fullscreen.
Arkham Asylum did not have this problem. DX9 and DX11 both have the problem. Resolution changes make no difference.
Also, the benchmark process hangs when it gets to 'Hit Esc to finish' (not a blocking issue).
AMD software is at Catalyst 12.3 - 12.4 upgrade appears to work but when you check for updates again, it downloads repeatedly.