I think this bug should be fixed in the GNOME package. Have you looked for an upstream bug report at bugzilla.gnome.org?
http://bugzilla.gnome.org/show_bug.cgi?id=170673 looks relevant to me -- PPD Download broken for printers found via browsing https://launchpad.net/bugs/52867 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
