Comment 2 for bug 1315636

Frankly, I don't think we'll address this issue in the 1.8 series.
With lightdm-gtk-greter 1.9 we'll do away with Gtk2 and then things will become simpler and Gtk3 should handle the loading of the components directly, as they will all be embedded in a single window (as opposed to various windows that are loaded after each other now).