New version of fglrx-driver (11-11-1) has broken dependency on amd64. It depends on xorg-video-abi-11 AND on xserver-xorg-core (< 2:1.10.99). According to AMD web site fglrx 11.11 is compatible with xserver 1.11 (and it is approved on Phoronix and Phoronix forums). Best wishes, L.