That version of fglrx lacks support for xserver 1.10 so can't be installed. However we got an updated driver today that should fix it. But since beta is frozen right now, you'll have to install manually or wait until post-beta1. See:
https://lists.ubuntu.com/archives/ubuntu-x/2011-March/001065.html ** Changed in: fglrx-installer (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to fglrx-installer in Ubuntu. https://bugs.launchpad.net/bugs/745498 Title: package fglrx 2:8.801-0ubuntu3 failed to install/upgrade: fglrx kernel module failed to build _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp