[Evolution] Problem with category search and LDAP

[Vaughn Bilton <vbilton sympatico ca>]

I'm using evolution 1.4.3, and I've just set up openldap for storing my
contacts. I've moved all my contacts over to the LDAP server. One
problem I have noticed is that when I try to do a Category search
against the LDAP server from evolution, I get no results back. I checked
using ethereal and the LDAP search filter being sent from evolution is
(objectClass=MyBarnIsBiggerThanYourBarn). Now I enjoy a rousing session
of agricultural-structure-comparison as much as the next guy :), but
this isn't helping me sort my contacts based on category. Can anybody
help me out here?