Today we've experienced the latest gnome-keyring bumped to 3.3.5 on Precise. Yeah nice thing.
But one thing.
I've noticed that gkr 3.3.5 seems to break gdm's login prompt at all... Damned!! So if you've already updated gkr, you'd better to go back to lightdm soon.
On the other hand, automatic login of gdm seems well, Oh not a clue... :(
Anyway I have to start fixing for it ASAP!