So I've set up a User and tried to restrict their access to the Media folders by specifying a start node. However, when this user logs in, a 'public' folder appears where they can access all Media items. Add to this, when the user tries to create a hyperlink to a Media item from a content page, the dialog box has the specified start node and children all greyed-out (although they can still pick in item from these nodes), and the public folder, which again, they can select ANY Media item from.

Why is this? Am I missing something? I don't want the public folder, just the folder they've been given permission to view.

Thanks in advance.