Disconnects and segfault against Open Directory

Mac OS X 10.5.2 Open Directory, clean install of Ubuntu 8.10 with nss-ldapd. The daemon.log shows repeated problems trying to connect and occasionally segfaults. The module nss-ldap works fine, as does ldap_search.

daemon.log:
May 10 13:18:07 min-ah nslcd[14493]: version 0.5 starting
May 10 13:18:07 min-ah nslcd[14493]: accepting connections
May 10 13:18:10 min-ah nslcd[14493]: connected to LDAP server ldap://sapporo.hk.miru.hk/
May 10 13:18:15 min-ah last message repeated 4 times
May 10 13:23:28 min-ah nslcd[14493]: ldap_result() failed: Can't contact LDAP server
May 10 13:23:34 min-ah last message repeated 4 times
May 10 13:23:35 min-ah nslcd[14493]: ldap_search_ext() failed: Can't contact LDAP server
May 10 13:23:35 min-ah nslcd[14493]: no available LDAP server found, sleeping 1 seconds
May 10 13:23:36 min-ah nslcd[14493]: connected to LDAP server ldap://sapporo.hk.miru.hk/

messages:
May 10 13:23:36 min-ah kernel: [14167.131231] nslcd[14498]: segfault at 00000003 eip b7f1aec9 esp b63a00d0 error 4