Comment 1 for bug 719815

Natty's language-selector won't work in lucid/maverick, as this was moved from pygtk2 to python gobject-introspection. This needs a custom upload then.

natty's gdm should work fine on lucid/maverick (I haven't tested it, though).

I don't think that this is a feature which is very important to have on a stable release; people who have used those for a long time already will have learned how to deal with the situation, and it actually brings some intrusive changes (for example, LC_MESSAGES will be exported through ssh and cause a lot of locale problems on remote sites). But that shouldn't preclude a backport, of course.