pam for passwords

[Steve Buehler]

I am trying to use the pam_passwdqc module to tighten up the 
passwords on my system.  I have edited the /etc/pam.d/passwd file by 
putting the following line at the end:
password  required        pam_passwdqc.so min=disabled,24,12,8,7
I then commented out the line:
password   required     pam_stack.so service=system-auth

I only commented out the line because if I didn't, it would ask me to 
enter the password 4 times and it wouldn't matter which line was 
first, it would only save the password that was entered during the 
pam_stack.so change.  When I had the pam_stack.so commented out, I 
could ssh in and run "passwd" to change the password, it would accept 
the new password, but would not write to the /etc/shadow file.

Can anybody tell me what I am doing wrong?

Thanks
Steve