The columns on the main wwwthreads page are misaligned when the forums are new, it's a table size bug that I'm not exactly able to track down but it goes away when each board has a post in it.
Language preferences are set by cookies. When you edit your profile the cookie is sent with the header information. You can't retrieve the cookie until the next load of a page, so you still get the old language until you hit another page so it can grab the updated cookie.
If you go to a forum via a bookmark or sometimes even an email link it will try to load the page from your cache and it will not think you are logged in until you hit a link and actually go through the authentication routine properly.
The FAQ needs PHP because it changes depending on some config options. Like if you have images allowed, polls turned on, file attachments turned on, etc.
To delete the double groups you will need to use a direct mysql command like DELETE FROM w3t_Groups WHERE G_Id > 4.
On some large scale forums you may need to give users Admin privs but not for all forums. The Read/Write permissions are editable for the admin just as a flexibility option. I don't want to limit what you can and cannot do with your users.
You can't assign moderators to a category, but you can assign them to individual forums. So, you can pretty much configure your moderator privileges however you need to.
To do a date listing of DD/MM/YYYY 13:24 you would probably need to set your $config['timeformat'] to short4 in config.inc.php and then edit main.inc.php about line 618 where it looks like this:
$time = date("Y/m/d H:i", $time);
Just change that, to this:
$time = date("d/m/Y H:i", $time);
