Help with pam and ldap please

[Per olof Ljungmark]

Hi all,

I have successfully configured four hosts with ldap/pam/nss on 5.2.1.
Now, on a fifth one, it simply does not work.
- Configuration files are identical
- ldap directory is identical and works
but:
as soon as I apply nsswitch.conf and ldap settings in /etc/pam.d/ 
authentication ceases to work.

Anybody with some experience from this has an idea? What information do 
I need to supply?

/etc/passwd and group are identical to the four working hosts

ldap.conf and nss_ldap.conf are very basic and identical to the four 
working hosts.