I've just tested with downgrading to the intrepid version of gnome-screensaver; same results.
I've also done a bit of stracing, and the helper does get as far as reading /etc/pam.d and loading the modules; then it falls down somewhere around where it spawns a separate thread for PAM in order to be able to continue handling UI events.
I've just tested with downgrading to the intrepid version of gnome-screensaver; same results.
I've also done a bit of stracing, and the helper does get as far as reading /etc/pam.d and loading the modules; then it falls down somewhere around where it spawns a separate thread for PAM in order to be able to continue handling UI events.