I have same same problem, and I'm attaching apt.log in case this can help tracking down this bug.
** Attachment added: "apt.log after failed upgrade" https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1241420/+attachment/3881995/+files/apt.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1241420 Title: Unable to upgrade to 13.10 ( Could not calculate the upgrade) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1241420/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
