nnmaildir trouble

[Lars Tobias Børsting]

Hi,

I have just converted all my mail to maildir format. I want to try the
nnmaildir backend but I can't quite figure it out.

I have put this in my .gnus.el:
(add-to-list 'gnus-secondary-select-methods
             '(nnmaildir ""
                         (directory "~/Maildir")))

All the maildir directories are under this folder, like this:
~/Maildir/
~/Maildir/.spam
~/Maildir/.Trash
~/Maildir/.lists.gnus
etc.

Now, when I open gnus, I need to subscribe to the new maildirs, right?
So I press U and type nnmaildir: and enter. And then no maildir
appears.

Am I missing something crucial here?

-- 
Regards,

Lars Tobias