slapd just silently dies

["fuser9bb@hotpop.com" <fuser9bb@hotpop.com>]

Hi. We are using openldap-2.2.15 built from source hosted on RHES3. I 
know that 2.2.24 is the current version, but I don't think we are too 
far behind the curve. Would prefer to not upgrade if possible, but we 
are open to it.

Anyway, here is our problem. We have a master openldap server running 
2.2.15. The server runs both slapd and slurpd. In the past few weeks, we 
have seen slapd just die. We can't find any errors in /var/log/messages 
or /var/log/openldap.log (where we have slapd messages going via 
syslog). Frankly, we don't know why slapd is dying.

I would like some pointers on troubleshooting the situation. Currently, 
I have loglevel set to 256. I can increase the loglevel, but it's hard 
to leave the loglevel on a high value for long since the log file will 
grow VERY rapidly. Right now we can't pin down the exact cause or timing 
of slapd dying, so I would need to leave loglevel high for a while.

Anyway, any known issues that would cause this for 2.2.15? Any 
suggestions for troubleshooting this problem?