Problems with the quota command (2.3.16-5)

[cyrus at puri.jet2web.at]

Hello,

I'm using cyrus-imapd-2.3.16-5 (Packager: Simon Matter) on CentOS 5.6
(I'm currently not updated to 2.4 because there are know bugs in the quota command)

With one mailbox I have a problem with the quota command.

There are difference between "quota -f" and "quota -f user.xyz":

# sudo -u cyrus /usr/lib/cyrus-imapd/quota -f user.xyz
user.xyz: usage was 101894166, now 171980078
   Quota   % Used     Used Root
  204800       82   167949 user.xyz

# sudo -u cyrus /usr/lib/cyrus-imapd/quota -f
user.xyz: usage was 171980078, now 101894166
   Quota   % Used     Used Root
[...]
  204800       48    99506 user.xyz
[...]

The summary size of all mails in this mailbox are 202344 kB...????

Is this a know bug in my using version?
Is there a way to fix this problem? (all other tested mailboxes have no problems like that...)

kr
Klemens