Correct, you would need to uninstall them and then reinstall with the PPA unselected. I am not sure if you will be able to upgrade though because there may be more 'unofficial' packages on your system, besides the xserver related ones.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/773473 Title: "cannot calculate upgrade" when attempting to upgrade to Natty 11.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
