I used to have this problem but mvo's fix removed the bug for me (I also tried it again with latest jaunty bits just now and it's still gone). I do see some deprecation warnings printed to the console, but the GUI works without any problems.
Bryan, what does "dpkg -l | grep software-properties-gtk" print for you? mn...@kingfish:~$ gksu --desktop /usr/share/applications/software-properties.desktop /usr/bin/software-properties-gtk /usr/bin/lsb_release:81: DeprecationWarning: the sets module is deprecated import sets Warning: the md5 module is deprecated; use hashlib instead /usr/bin/lsb_release:81: DeprecationWarning: the sets module is deprecated import sets /usr/bin/lsb_release:81: DeprecationWarning: the sets module is deprecated import sets /usr/bin/lsb_release:81: DeprecationWarning: the sets module is deprecated import sets mn...@kingfish:~$ dpkg -l | grep python-apt ii python-apt 0.7.9~exp2ubuntu8 Python interface to libapt-pkg mn...@kingfish:~$ dpkg -l | grep software-properties-gtk ii software-properties-gtk 0.71.1 manage the repositories that you install software from mn...@kingfish:~$ -- "software sources" UI broken in jaunty https://bugs.launchpad.net/bugs/319714 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