changing minimum password length in Jaunty

[Stephen Burke]

I'm having some trouble changing the minimum password length in
Jaunty.  I've tried changing lines in my /etc/pam.d/common-password
file a bunch of times adding min=8, minlen=8 etc.  But nothing seems
to work when I try & run the command sudo adduser and see it ask for a
password of at least 8 characters.  Can anyone help with the correct
lines that I need in my common-password file to enforce a minimum
length of password?

Thanks
Steve