Error message opening imap boxes

[Andreas Haase]

Hello,

after doing some (probably silly) stuff, I get error messages when some of 
my users are opening their imap boxes. The log file entries are:

--- snip ---
May 10 17:15:55 mail imapd[4925]: login: host.name[xxx.xxx.xxx.xxx] 
username plaintext
May 10 17:15:55 mail imapd[4925]: skiplist: invalid magic header: 
/var/lib/imap/user/u/username.seen
May 10 17:15:55 mail imapd[4925]: DBERROR: opening 
/var/lib/imap/user/u/username.seen: cyrusdb error
May 10 17:15:55 mail imapd[4925]: Could not open seen state for username 
(System I/O error)
May 10 17:15:55 mail imapd[4925]: open: user username opened INBOX
--- snap ---

So the user seems to get his mails correctly. Is there any way to get rid 
of the messages without deleting /var/lib/imap/user/u/username.seen? A 
reconstruct seems not to be the solution because after that the messages 
are still there.

Regards,

Andreas Haase
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