That's because you haven't added the GPG key for Medibuntu. Please do: sudo apt-get update && sudo apt-get install medibuntu-keyring && sudo apt-get update
Please refer to https://help.ubuntu.com/community/Medibuntu#Adding%20the%20Repositories ** Changed in: update-manager (Ubuntu) Status: New => Invalid -- Malformed Release file when updating to 8.04 with update manager https://bugs.launchpad.net/bugs/213890 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
