This has to do with the fact that you are using the xorg-edges PPA and the distribution upgrade failing to calculate the upgrade. You might have better luck upgrading if you remove the PPA and return to Precise's video drivers.
2013-01-30 21:25:14,935 DEBUG examining: 'deb http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu precise main' 2013-01-30 21:25:14,936 DEBUG entry '# deb http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu quantal main # disabled on upgrade to quantal' was disabled (unknown mirror)
This has to do with the fact that you are using the xorg-edges PPA and the distribution upgrade failing to calculate the upgrade. You might have better luck upgrading if you remove the PPA and return to Precise's video drivers.
2013-01-30 21:25:14,935 DEBUG examining: 'deb http:// ppa.launchpad. net/xorg- edgers/ ppa/ubuntu precise main' ppa.launchpad. net/xorg- edgers/ ppa/ubuntu quantal main # disabled on upgrade to quantal' was disabled (unknown mirror)
2013-01-30 21:25:14,936 DEBUG entry '# deb http://