I was trying to add this trick to login without using a password for certain users (kids...).
(also adding /gdm/password file...)
sudo nano /etc/pam.d/gdm
# start login without password
auth sufficient pam_listfile.so item=user sense=allow file=/etc/gdm/nopassusers.txt onerr=fail
It works in 7.04, 7.10 but in 8.04 it doesn't work and also, when i try to exit from gnome, desktop hangs for seconds.
thanks in advance and sorry for my rough english!
ps: it seems someone else is in trouble