@Brian: I booted my PC (http://wiki.ubuntu-it.org/CarlaSella/lshw), the one that did not boot, with a USB live of today's Raring Daily ISO and the problem is gone, my PC boots correclty.
@Brian: I booted my PC (http:// wiki.ubuntu- it.org/ CarlaSella/ lshw), the one that did not boot, with a USB live of today's Raring Daily ISO and the problem is gone, my PC boots correclty.