Last night I updated my servers from NW65 sp7 to sp8. I also applied
iprntnw65sp8b-2.html. This morning users who aren't required to
authenticate can print. But those who need to authenticate to their
printers are unable to. The following sample error is showing up in
the apache logs:

[Fri May 28 08:47:32 2010] [warn] [client] [26]
auth_ldapdn authenticate: user CN=<username>,OU=INFW,O=MSKTD
authentication failed; URI /ipps/GESTDSM745 [LDAP:
ldap_simple_bind_s() failed][Can't contact LDAP server]

Suggestions for troubleshooting this?