The following patch has been applied to OpenLDAP Release Engineering branch to resolve the slapd derefDN() crash. http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ldbm/alias.c.diff?r1=1.3.4.8.2.3&r2=1.3.4.8.2.4&hideattic=1&sortbydate=0