The problem appears to be related to some PPAs. I found this post helpful: http://askubuntu.com/questions/202730/how-to-fix-the-unable-to-calculate-upgrade-issue-when-upgrading-from-12-04-to
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1241023 Title: can't upgrade to saucy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1241023/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
