[Plugin: Search Unleashed] Completely flawed

After installing this plugin, it displays the same results no matter what category you select. We’ve got about 30 categories on our site and every single one chosen comes back displaying the same latest posts. When I deactivated this plugin, the problem goes away. So what can be done about this? The plugin is no good if it doesn’t play nice with other elements in WP.

http://wordpress.org/extend/plugins/search-unleashed/