mailboxes.db DBERROR's?

[derek spencer]

I'm running cyrus 2.0.14 on a machine that's been working fine for about 4
weeks.  I've thrown some more users on the system (not a lot), and it
appears that my mailboxes file is corrupt.  How can I recover from this?

Jun 27 18:03:07 neo imapd[18194]: DBERROR
db3: /var/imap/mailboxes.db: unexpected file type or format
Jun 27 18:03:07 neo imapd[18194]: DBERROR: opening
/var/imap/mailboxes.db: Invalid argument
Jun 27 18:03:07 neo imapd[18194]: DBERROR: opening
/var/imap/mailboxes.db: cyrusdb error