Ran into problems with broken dependencies after running all regular updates, including dist-upgrade.
ran the following two lines:
Code:sudo dpkg --configure -aThese fixed dependency problems and allowed for the installation of the 3.7 kernel and the remaining upgrades.Code:sudo apt-get -f install
I already had Raring running in VB but wanted to give this upgrade method a try and was frustrated until I stumbled upon the 'dpkg' line above.
Thanks, Graham, for providing the sources list info.
Graphical way (bypass the bug):
Code:do-release-upgrade -d -f DistUpgradeViewGtk3