it displays them to show you which packages were installed from the ppa. if you dont install anything from any particular ppa and you still see the ppa in the software center then thats a bug.
-- USC doesn't remember removed PPA https://bugs.launchpad.net/bugs/654019 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
