[Samba] NSCD, should it be used or not with LDAP, pam, nss

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Again, another confusing issue in two how-to's I'm trying to resolve.

In the SBE (samba-3 by example) Pg 161 in the PDF states. (It's
actually page 200 of the PDF, but 161 of the numbered document pages.)

"The name service caching daemon (nscd) is a primary cause of
difficulties with name resolution, particularly where winbind is
used."

But the Authconfig in the IDEALX scripts appears to use NSCD, and the
documents specifically talk about the desirability of caching for
nss_ldap and pam_ldap.

(Section 4.2.1 of rev 1.10) (Quote: if you're going to use pam_ldap
and nss_ldap you really should use it for optimization.)

Which is right? Why?

TIA
-Greg