Hi,
In the config file there are options to set the special folders: drafts_mbox, sent_mbox, junk_mbox, trash_mbox and also to set the default_folders (the ones that can be protected on the folder management screen). On the preferences screen in the UI in the special folders section a user can override the special folder settings but this overrides both the special folders and the default folders.
On my system I am using a plugin to get the default and speical folder information from the server when the user logs in (my IMAP supports the special-use extension). I would to separate the special folder and default folder config options in the UI so that a use is able to setup their own speical folders without changing the default folders setting.
I realise I could do this with a plugin but it seemed a little odd to me that a user is able to change what folders are protected - if an admin wants to protect some folders then users should not be able to get around that.
Phil