Comment 18 for bug 576531

Yesterday was trying to execute the Wolf Geldmacher's comment (#12), but for an accident the solution was stopped in the middle, before the step that recovers libs from the backup folder. The result was that the PC was not able to reboot anymore, neither in normal boot nor in recovery mode. The only way to fix the problem was to use a live CD, to mount the hard-disk containing the malfunctioning Ubuntu and to move the libs using last commands from comment #12 :
cd /lib
mv backup/* .
After that the PC was able to reboot again !