In you step 4), when closing software sources, youshould have been asked to reload the repositories. Did you ? If not, USC can't know the PPA is gone.
** Changed in: software-center (Ubuntu) Status: New => Incomplete -- Software-Center don't remove unactivated ppa's https://bugs.launchpad.net/bugs/574155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs