Minimum password length + fedora

Hello,
I have a Fedora Core 2 system and I'm trying to adjust the system's
minimum password length to be less than 6. I edited the
/etc/login.defs file to look like

# PASS_MAX_DAYS Maximum number of days a password may be used.
# PASS_MIN_DAYS Minimum number of days allowed between
password changes.
# PASS_MIN_LEN Minimum acceptable password length.
# PASS_WARN_AGE Number of days warning given before a password
expires.
#
PASS_MAX_DAYS 99999
PASS_MIN_DAYS 0
PASS_MIN_LEN 0
PASS_WARN_AGE 7

and restarted the machine. But when I try and change my password with
the "passwd" command to a password of 5 characters, I get the message
"Password is too short." What other file must I alter? How can I
change the default minimum password length?

Thanks, - Dave