Fedup failed... Though I still have a reasonable system so I'll download the CD and install afresh tomorrow.
In the italian mailing list they suggested to enable updates-testing repo and upgrade fedup from 0.7 to 0.8. It worked, and i finally upgrade from F19 to F20. But my system sometimes decide to block after the grub...
Matt Molyneaux likes this.
Yeah I already did that, and I used the no-gpg-check (or whatever it was) option.