Thank you for the wonderful plugin.
I found a bug and fixed it on my own. I report that.
(I'm a Japanese and there might be wrong English)
The bug was like this:
When the plugin is activated, you get a error message below.
Notice: load_plugin_textdomain was called with an argument that is deprecated since version 2.7 with no alternative available. in /var/www/wp-includes/functions.php on line 3389
And this unables ajax on the tags/category admin pages.
When you add tag or category, nothing happens on the page while you can see the tag/category added when you reload the page.
So, I comment outed private!/xfw.class.php line 26
Now it works very well.
Thank you for your pluguin!