[Dovecot] Keeping \Seen flag private

Hi all,

I wanna to set up shared folders for a couple of users and I'd like that everyone could keep the \Seen flag as private. So if user #1 reads some messages and user #2 not, those messages appear as "unseen" to #2 and "seen" to #1.

I've implemented shared folders using namespaces with every user having their own "control" and "private" directories. But all the flags (\Seen included) are "shared".

Am I on the right path? Some tip or documentation?

Oh, I almost forgot: using dovecot 1.0.13 (from Debian Etch backports).

Thank you in advance!

-- Imobach González Sosa Banot.net http://www.banot.net/