Comment 26 for bug 553162

I don't see why it should be inconsistent. If you pick a new language in gdm, then presumably you actually want to use this language (why else did you do it?), so in this case we should really empty $LANGUAGE. We just need to care about leaving $LANGUAGE alone if the selected language in gdm already matches the one that the user has in his profile, in other words, when he did not change it.