[Dovecot] Problem with namespaces

Hi,

I'm trying to create Shared folder with subfolders "SPAM" and "NOT_Spam".

Configuration: namespace public { separator = / prefix = Shared/ location = maildir:/vmail/%Ld/Shared:INDEX=/vmail/%Ld/%Ln/Shared hidden = no }

Result I get (is exactly what I want): Inbox Drafts Sent Trash Shared --NOT_Spam --SPAM

I can select SPAM and NOT_Spam, delete messages etc, but when I select "Shared", it shows: "Mailbox doesn't exist: Shared." As a client I used OE and Thunderbird.

How to get rid of that message?

I'm running latest Dovecot release 1.1.2

/Tom