pam_mysql - non-crypt()ish MD5 hash is not supported in this build

["jeffry s" <paragasu@gmail.com>]

i am trying to use pam mysql to authenticate vsftpd user.
basically when i try to authenticate against the table with password encrypted with PASSWORD()
built in mysql. it work!

auth required pam_mysql.so user=root passwd=**** host=localhost db=dbtest table=user usercolumn=user_name passwdcolumn=user_password crypt=2
account required pam_mysql.so user=root passwd=****  host=localhost db=dbtest table=user usercolum=user_name passwdcolumn=user_password crypt=2

now the password is encrypted with mysql MD5() function

auth required pam_mysql.so user=root passwd=**** host=localhost
db=dbtest table=user usercolumn=user_name passwdcolumn=user_password
crypt=3
account required pam_mysql.so user=root passwd=****  host=localhost
db=dbtest table=user usercolum=user_name passwdcolumn=user_password
crypt=3

but it doesn't work. digging into /var/log/auth.log

vsftpd: pam_mysql - non-crypt()ish MD5 hash is not supported in this build.

anyone know how to fix this?
i am using debian etch.