Filtering or reducing the number of groups

Hi all,

I have just installed 3.3.2 for testing onto a test AD using LDAP. we have 25000 users and 10000 groups! so the users come up fine in the admin console. however the groups, once you searched for the one you want just sits there trying to bring up the next screen! So my question is 'Is there a way to filter the groups available or point openfire to another OU.

Mark