I'm using NetBSD-3.0 BETA

1. Make a simple /etc/login.conf

# cd /etc
# echo 'default|default class:hushlogin:' > login.conf
# cap_mkdb login.conf

2. Attempt to use su or login
# su
su: pam_acct_mgmt: error in service module
# login
login: root
Password: <correct password>
login: pam_acct_mgmt: authentication error

Here's what /var/log/authlog has to say:
Oct 31 13:55:26 8300 su: default: unknown class
Oct 31 13:55:32 8300 last message repeated 2 times
Oct 31 13:55:32 8300 su: pam_acct_mgmt: error in service module

Oct 31 13:55:56 8300 login: default: unknown class
Oct 31 13:55:59 8300 last message repeated 4 times
Oct 31 13:55:59 8300 login: pam_acct_mgmt: authentication error

This persists after a reboot.

What am I doing wrong?