[Dovecot] Duplicate header extension keywords

[Rainer Ophoven]

I'm running dovecot supporting imaps and pop3s in a small home-office
environment on a Linux-box, kernel 2.4.33, with postfix-2.3.4,
amavisd-new and spamassassin.
I use Thunderbird as mail-client on Windows XP.

ever since upgrading to RC10 I every now and then find these error
messages in doveocot.log:
Error: IMAP(rainer): Corrupted index file
/home/rainer/Maildir/.software.Dovecot/dovecot.index: Duplicate header
extension keywords

and close by:

Error: IMAP(rainer): Fixed index file
/home/rainer/Maildir/.software.Dovecot/dovecot.index:
first_recent_uid_lowwater 1952 -> 1951

Misconfiguration or where is the problem?

-- 
in diesem Sinne,
Rainer

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