gdm login without password

[Marius Ley <mley@gmx.ch>]

Is there any functionality in gdm that allows users with empty 
passwords to log
in? I have only found out about the AutomaticLogic variable in 
gdm.conf, which
is not what I want. I just want users with empty passwords to be able 
to log in,
which gdm doesn't let me do in its default configuration (I'm using gdm 
2.6 on
debian sarge).

Thanks for any suggestions.