Pam issues w/ upgrading mail server from FC3 to FC5

[Philip Prindeville]

Since we reimaged our mail server (using Sendmail, Cyrus-imap, Mimedefang,
and SpamAssassin) to FC5, we've been seeing:

Nov 10 11:13:21 mail saslauthd[2912]: Deprecated pam_stack module called from service "imap"
Nov 10 11:13:21 mail saslauthd[2912]: Deprecated pam_stack module called from service "imap"
Nov 10 11:56:03 mail saslauthd[2912]: Deprecated pam_stack module called from service "imap"
Nov 10 11:56:03 mail saslauthd[2912]: Deprecated pam_stack module called from service "imap"
Nov 10 11:56:03 mail saslauthd[2909]: Deprecated pam_stack module called from service "imap"

in our /var/log/secure logfile.  sigh...  did I forget to do
something else when setting up the mail server following the
FC5 reimage?

Thanks,

-Philip