dovecot - Oct 2013 - Broken files?

Getting a lot of these error for two specific mailboxes. They repeat many times
a day, usually within less than 5 minutes.

mail dovecot: imap(kremels): Error: Broken file
/home/kremels/Maildir/.zz.x-tech.2010/dovecot-uidlist line 2: Invalid extended
fields: :

 $ cat .zz.x-tech.2010/dovecot-uidlist 
3 V1263241007 N56581 G11fe2118db236952f984010021d1a38d

OI tried deleting the files that generated the errors, but they were recreated
and the errors returned.

(I?m using dovecot2 and Maildir)

-- 
Death was familiar with the concept of the eternal, ever-renewed hero,
the champion with a thousand faces. He'd refrained from commenting.

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On Thu, 24 Oct 2013, LuKreme wrote:
> Getting a lot of these error for two specific mailboxes. They repeat many
times a day, usually within less than 5 minutes.
>
> mail dovecot: imap(kremels): Error: Broken file
/home/kremels/Maildir/.zz.x-tech.2010/dovecot-uidlist line 2: Invalid extended
fields: :
>
> $ cat .zz.x-tech.2010/dovecot-uidlist
> 3 V1263241007 N56581 G11fe2118db236952f984010021d1a38d
>
> OI tried deleting the files that generated the errors, but they were
recreated and the errors returned.
the error claims line 2, but the file has just one? Or is the second line 
present, but empty (just newline).

Is it possible, that two Dovecot instances, maybe two on the same server 
or via a shared filesystem, access the same mailbox the same time?

- -- 
Steffen Kaiser
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