I also have problems with usergroups and categories permission
I have a Category named "Workshop" and I only want people who was on that workshop to upload to that category.
But even if I in the categories permissions set only that usergroup to allow uploads all other usergroups can still upload to that category???
In the Usergroup Permissions you only have yes or no to uploads. And if I set that permission to no the user can´t upload in any Category.
So what can I do?