lines 153 and 156 of ogroupManagement seems wrong
if (array_search('gosaAccount', $attrs['objectClass'])) {
-> If $attrs['objectClass'] contains 'gosaAccount' at index 0, this will be considered as FALSE. in_array should be used instead.
(from redmine: issue id 1206, created on 2012-08-02, closed on 2012-11-21)