a bug fix for openldap has been released, 1.2.7 fixes too memory leaks ITS 249 and 250, that could eat all the systems memory. 1.2.7 is a plugin replacement of 1.2.6, the same configuration, could make a binary rpm AFAIK i've made my own with patches from bugtraq 4485, 4487 and 4488, it is available from ftp://sajino.lared.net.pe/pub/linux/redhat/carenas
fixed in openldap-1.2.7-1.