Error Installing FGLRX driver

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http://askubuntu.com – My computer uses a Radeon HD 6950. I installed the "ATI/AMD proprietary FGLRX graphics driver" just fine, however, when I tried to install the "post-release updates", I received an error ("Sorry, installation of this driver failed.") The log dump: 2012-08-07 20:46:12,739 DEBUG: fglrx_updates is not the alternative in use 2012-08-07 20:46:17,150 DEBUG: Installing package: fglrx-updates 2012-08-07 20:46:17,459 DEBUG: install progress dpkg-exec 0.000000 2012-08-07 20:46:17,650 DEBUG: install progress fglrx-amdcccle 0.000000 2012-08-07 20:46:17,718 DEBUG: install progress fglrx-amdcccle 6.250000 (HowTos)