This seems to be a problem with the medibuntu repositories and with the PPA not providing packages for precise, so I am setting this to Invalid, as this is not the fault of software-properties. Feel free to reopen if you disagree, but as the repositories do not provide any packages for the OS version you are running, displaying the error messages on apt-get update seems the right thing to do.
** Changed in: software-properties (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/987829 Title: add-apt-repository crashes with invalid ppa link To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/987829/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs