There is a server down time. That prevents update-manager from fetching the required update (metarelease) information.
Thanks, Sebastian ** Changed in: update-manager (Ubuntu) Status: Unconfirmed => Confirmed -- "update-manager -c" wont work for upgrade from 6.06 to 6.10 https://launchpad.net/bugs/89432 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs