Public bug reported: Binary package hint: update-manager
W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/natty/Release.gpg Something wicked happened resolving 'extras.ubuntu.com:http' (-5 - No address associated with hostname) , E:Some index files failed to download, they have been ignored, or old ones used instead. ** Affects: update-manager (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/778329 Title: Kubuntu 11.04 upgrade crash -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs