I recently changed my slapd.conf so that it had idletimeout 30 in it and restarted slapd. Watching my courier IMAP logs, I found that every three minutes there would be tons of login failures. Slapd never died, and I found that if I tried to use IMAP to authenticate during one of these lapses I would fail also. Removing idletimeout 30 from slapd.conf and restarting made this behavior go away.
This is very strange to me.
Micah,
--Quanah
-- Quanah Gibson-Mount Principal Software Developer ITSS/TSS/Computing Systems ITSS/TSS/Infrastructure Operations Stanford University GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html