problems loading zones with sdb (mysql)

Hi All-
I'm running into some issues using the MySQL sdb found at
http://mysql-bind.sourceforge.net what I'm running into is random
zones not wanting to load. It is always the same zones when I restart
the named service. The logs report "no NS or SOA records found for
<zone name>". Yet the NS and SOA records are in the database table for
the zone, other zones with the exact same config are working so I'm a
little puzzled. Any input on how I might better be able to
troubleshoot this would be greatly appreciated.