As i expected before now U got a prerelease driver. Somehow they managed to create broken binary debs. The new names is just fglrx instead of xorg-driver-fglrx, but in the already prebuild binaries the file /usr/lib/fglrx/ld.so.conf is MISSING. When you want to use it:
Then the missing file is there. Will test with pbuilder later... Do NOT try to install those debs on Debian, that will NOT work!
dpkg-source -x fglrx-installer_8.721-0ubuntu1.dsc