Comment 4 for bug 560189

Succeeded to fix my system, followed this conversation:
http://ubuntuforums.org/showthread.php?t=1450843
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The solution is as follows:

sudo gedit /var/lib/dpkg/diversions

Delete any lines mentioning fglrx. It is a short file, so it wont take you long. Reinstall fglrx and you will be good to go.
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I just removed lines including libGL.so.1.2