[Dovecot] Quota Issue

Hi All

I'm using dovecot version 1.2.4_1 and I noticed something strange. I checked the list but so far I haven't found anything that exactly fits my setup. I'm using maildirs and ldap as a backend to authenticate. A user went over quota, realized it and proceeded to delete a lot of email. Even now, after about 15 minutes, the quota indicator is still showing that he is over quota even though the users mailbox size is down by over 200MB. Why isn't Dovecot showing the change, and is there a way around this?

Thanks for any help.