anyone have pam_krb5.so working with tiger?

I need to allow my admins to use sudo on Mac Os X servers and clients, but they have no local accounts (accounts through NIS with no password). Passwords are done through our MIT kerberos KDC. I compiled pam_krb5.so, installed it, and changed /etc/pam.d/sudo, but I see the following in my system.log file when I use sudo with a kerberos password: sudo: PAM unable to _pam_dlopen(/usr/lib/pam/pam_krb5.so) sudo: PAM adding faulty module: /usr/lib/pam/pam_krb5.so any ideas? Thanks, Allan