======== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.5.-1
- Linux/BSD distribution name and version:  Debian GNU/Linux 7.11 (wheezy)
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx):Apache
- Manage mail accounts with iRedAdmin-Pro? no opensource edition
- Related log if you're reporting an issue:
====
Hello. Recently, I updated my mail server from version 0.9.2 to 0.9.5-1. Upgrade steps can be seen here - http://sanotes.ru/obnovlenie-iredmail-s … o-0-9-5-1/

There is a suspicion that one of the mailboxes, with a maximum quota of 8Gb, not properly displayed free space. See in the attachment.

Was 98% and I removed more than 5,000 messages (/var/vmail/vmail1/mydomain/p/s/t/pst-2013.08.22.13.18.25/Maildir/cur), but the percentage in roundcubemail has not changed. Then I decided to wait when the figure will change to 99% and this occurred after 100 messages. Was 98% and 19323, now 99% and 19826 messages. I think this is not the correct data?

My dovecot.conf:

quota_warning = storage=95%% quota-warning 95 %u
quota_warning2 = storage=90%% quota-warning 90 %u
quota_warning3 = storage=85%% quota-warning 85 %u