LDAP and MediaWiki Syncronization

You'd have to be more specific, without more info we can't help you, I have no idea how mediawiki works or what is and isn't working, if you can't get into there code then it's best to ask at there site not here, but if you have full access to the code and can post what isn't working then we can try to help.

$wgLDAPGroupUseRetrievedUsername = array(
"domain"=>true
);
$wgLDAPGroupObjectclass = array(
"domain"=>"group"
);
$wgLDAPGroupAttribute = array(
"domain"=>"member"
);
$wgLDAPGroupNameAttribute = array(
"domain"=>"cn"
);
#$wgLDAPRequiredGroups = array(
#"domain"=> array("group name")
#);
$wgLDAPUseLDAPGroups = array(
"domain"=>true
);
$wgLDAPGroupsPrevail = array(
"domain"=>false
);
$wgLDAPGroupSearchNestedGroups = array(
"domain"=>true
);
$wgLDAPRetrievePrefs = array(
"domain"=>true
);
As you can see we have commented out the stuff in bold, it makes the code fail when we let it run.

To be honest I'd have to see way more to even began to know, this is just configuration. My suggestion would be to ask at the mediawiki forums (I assume they have some) they'd know more about hacking there own software.