I've just upgraded to Natty and lost ability to login through the Gnome login screen - "Module is unknown" message appears after I enter the correct password and hit "Enter".
I'm still able to switch to a text console and login there, both as root and as a restricted user.
Here is an excerpt from my /var/log/auth.log file:
This appears after each attempt to login at Gnome login screen.
May 1 14:12:09 HomeServer gdm-session-worker: PAM unable to dlopen(/lib/security/pam_listfile.so): /lib/security/pam_listfile.so: cannot open shared object file: No such file or directory
May 1 14:12:09 HomeServer gdm-session-worker: PAM adding faulty module: /lib/security/pam_listfile.so
May 1 14:12:09 HomeServer gdm-session-worker: pam_succeed_if(gdm:auth): requirement "user ingroup nopasswdlogin" not met by user "deadrix"
I've reinstalled libpam-modules, but with no avail.
Please help to solve this.