ldap search problem

[Karolis Dautartas <list@public.lt>]

hi,

I am running an email server with it's user DB stored in LDAP.
I am writing to this list because I believe my problem is related to
LDAP, not the email software.

The problem in general is very simple. Sometimes LDAP searches return
0 results, although they should definately return exactly 1 result.
When this happens, a POP3 user auth would fail and he would be asked
for a new password.

I have noticed, that these search failures are related to other
activity on the server. Say if I am running a "make all" command in
PHP directory, LDAP would not be able to perform searches. The server
load isn't at all high at these moments - around 0.7 or so.

Has anyone experienced anything like this, and what are possible
solutions?

I am using Fedora and openldap-2.1.29-1 RPM version.

thanks,
Karolis