FreeLists / dokuwiki / [dokuwiki] ldap auth groups

[Hamish <lists@xxxxxxxxxxx>]

Hello
I am using the ldap tree from kolab (www.kolab.org) to authenticate dokuwiki 
users, but I am having trouble with groups. We have a group called "it" (it 
is a distribution list in kolab) with this ldif:
dn: cn=it,dc=mydomain,dc=com
objectClass: kolabGroupOfNames
cn: it
mail: it@xxxxxxxxxxxx
member: cn=Some Guy,dc=mydomain,dc=com
member: cn=Other Guy,dc=mydomain,dc=com

Here is the ldap section from local.php:
$conf['auth']['ldap']['server']      = 'myserver';
$conf['auth']['ldap']['usertree']    = 'dc=mydomain, dc=com';
$conf['auth']['ldap']['grouptree']   = 'dc=mydomain, dc=com';
$conf['auth']['ldap']['userfilter']  = '(&(uid=%{user}))';
#$conf['auth']['ldap']['groupfilter'] = '(&(objectClass=kolabGroupOfNames)(|
(cn=%{gid})(member=%{user})))';
$conf['auth']['ldap']['mapping'] = array();

User authentication works fine, but I am having trouble with groups. I have: 
$conf['superuser']   = '@it'; to try and get all members to be able to use 
the admin functions, but not having any luck.
Anyone got any ideas?
Thanks,
Hamish