When a domain is vampired, the partition head record (ie, cn=configuration,dc=samba,dc=example,dc=com) appears in the main partition, and in the configuration partitation. If you do a search on cn=configuration with the search_options:2 control specified, then two results with the same GUID are returned, one from each database. We should only return 1 (perhaps we should actually only store one?)
Should be fixed in "master".