Drupal's Taxonomy access permissions - setup help needed

trying to setup drupal's taxonomy module (http://drupal.org/project/taxonomy_access) to administer access to specific categories.

i have two categories of users (two kind of roles). all i'm trying to do is to setup that one have access to some category, and other not.

i did made proper(?) changes in admin/user/taxonomy_access and (ie.) admin/user/taxonomy_access/edit/7, but still user from other group can access to the content that should be forbidden for them...

Try to rebuild permissions (URL: /admin/content/node-settings/rebuild). If you set up the permissions correctly, this should fix your problem. I would also clear all caches, just to be sure.

I would also try to rebuild permissions. If you are using Drupal 7, the Rebuild Permissions link has been moved. It can be found at /admin/reports/status/rebuild

You can also navigate to Reports -> Status report and the link is under the Node Access Permissions row.