General :: PAM Password Restrictions Don't Seem To Be Working

I set some restrictions in /etc/pam.d/system-auth, but they don't seem to be affecting anything.

/etc/pam.d/passwd:

Code:

password required pam_cracklib.so retry=3 minlen=8
password required pam_unix.so md5 shadow use_authtok

/etc/pam.d/system-auth:

Code:

auth required pam_env.so
auth sufficient pam_unix.so likeauth nullok
auth required pam_deny.so

[code]....