Apr 03 13:01:46 drac_	xophEr: Happened to me too.
Apr 03 13:02:04 drac_	xophEr: cp /usr/X11R6/lib/libGL.so.1.2 /root/
Apr 03 13:02:29 drac_	xophEr: dpkg -i --force-overwrite /var/cache/apt/archives/xlibmesa-gl_fill_in_the_spots.deb
Apr 03 13:02:33 drac_	xophEr: apt-get -f install
Apr 03 13:02:52 drac_	xophEr: mv /root/libGL.so.1.2 /usr/X11R6/lib/