Serious Cyrus mail problems

I have been having some serious cyrus problems all week. I do not understand why they are occurring, and I hope that someone here can help me out.

After an upgrade (10.3.8–>10.3.9), I have one user (out of 10) whose inbox was truncated from 3000 messages to 6.

I checked, and the messages are still in /var/spool/imap/user/USER.

I stopped the mail server and ran (as cyrus)
/usr/bin/cyrus/bin/reconstruct -f -r user/USER

What did this do? It makes the user’s inbox dissapear. It shows up in cyradmin, shows up in a client subscribe list, but the IMAP client cannot access it, and I get this error when mail is delivered to it:

Aug 18 14:28:42 localhost postfix/pipe[1876]: 76E1E3656F6: to=, orig_to=, relay=procmail, delay=23, status=deferred (temporary failure)

(I have procmail and spamassassin installed)

To fix this, I have had to rebuild the ENTIRE cyrus db. And when I do, the reconstruct tool seems to miss some of the mail in this user’s folders.

Does anyone have any ideas? Any at all? Apple TS is zero help.

Thank you!

Jed