[Dovecot] Can´t move folders in Outlook

[Mult´Moldes - Informatica]

Hi, this is my first time in a mailing list, so I don´t know if I´m 
doing it right.

My problem is that I cannot move a folder into another one, I can create 
them, move messages, etc, but I can´t move a folder, no matter what folder.
It works fine With Thunderbird, but in Outlook Express or WLive Mail2009 
it just doesn´t go!
Must be something wrong with my .conf. I hope someone can help me please.

dovecot --version
1.0.15


dovecot -n
# 1.0.15: /etc/dovecot/dovecot.conf
log_timestamp: %Y-%m-%d %H:%M:%S
protocols: imap
listen: 192.168.10.2:210
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable: /usr/lib/dovecot/imap-login
mail_privileged_group: mail
mail_location: maildir:/var/mail/%u
auth default:
   passdb:
     driver: pam
   userdb:
     driver: passwd