[geeks] cron errors

[Jeff Cole]

I'm not entirely sure what I did, but, cron won't run now and I can't su 
  to any user (sudo still works though). Here's what I'm seeing in 
/var/adm/messages:

Jan 15 10:40:00 theomania cron[17079]: [ID 401707 user.error] 
open_module: /usr/lib/security/pam_authtok_get.so.1 failed: ld.so.1: 
/usr/sbin/cron: fatal: libsldap.so.1: open failed: No such file or directory
Jan 15 10:40:00 theomania cron[17079]: [ID 487707 user.error] 
load_modules: can not open module /usr/lib/security/pam_authtok_get.so.1
Jan 15 10:45:00 theomania cron[17081]: [ID 401707 user.error] 
open_module: /usr/lib/security/pam_authtok_get.so.1 failed: ld.so.1: 
/usr/sbin/cron: fatal: libsldap.so.1: open failed: No such file or directory

When I try to su to a user, I get this:

 > su - mrtg
su: unable to set credentials

I've never used ldap, so, I'm not sure why pam is complaining about it...