Comment 11 for bug 1052605

Once this has happened its almost impossible to recover from this.

running sudo apt-get update && sudo apt-get upgrade does not help ( 266 packages could not be upgraded),

Tried to go in the recovery mode in the grub menu and then select 'dpkg' to Repair broken packages returned with

'E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?'

And rebooting from this state does not let the log-in process succeed, leaving the system unusable