The bug is fixed in gdm 2.14.10 (http://ftp.gnome.org/pub/GNOME/sources/gdm/2.14/gdm-2.14.10.changes).
I really hope Ryan gets this fix into Etch :-) Cheers, Simon
Note, that the bug is already reported to the Gnome BTS under #345829
(http://bugzilla.gnome.org/show_bug.cgi?id=345829).
