As I suspected, you're running the "radeon" 2D driver with the "fglrx" 3D driver, which don't work together. "fglrx" is commented out in xorg.conf and replaced with "ati". Revert that change, reboot and all should be well.
As I suspected, you're running the "radeon" 2D driver with the "fglrx" 3D driver, which don't work together. "fglrx" is commented out in xorg.conf and replaced with "ati". Revert that change, reboot and all should be well.