I found a solution in order to use the system anyway. Go on synaptic, completely remove update-manager. Answer yes for the question about dependencies and restart computer. Then reinstall update-manger. It work for me.
Good luck everyone. -- pycentral crashed with AttributeError in prepare() https://bugs.launchpad.net/bugs/196829 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
