> > I'm encountering a big problem every time i lock the screen: I'm not able > > to unlock it, i have to do a logout with ctrl+alt+canc. > More info needed. What are you running ? FC1 ? FC2 ? > My guess: > check /etc/pam.d/xscreensaver, mine has : > #%PAM-1.0 > > # Red Hat says this is right for them, as of 7.3: > auth required pam_stack.so service=system-auth > > # This is what we were using before: > # auth required pam_pwdb.so shadow nullok Of course, sorry: i'm running FC2 on an Olidata Tehome Laptop. The video controller is a nVidia GeForce 4. I've checked your suggestion but my xscreensaver file looks exactly like your. Thanks Rosanna