[Dovecot] corrupted .imap.index.log

[Fredrick Backman]

Hi, I'm using version 0.99.10.8 on debian 2.4.26 and am getting this 
problem, can someone please shed some light over this?

Aug 31 13:58:58 xxx imap(someone): file_wait_lock() failed with modify 
log file /var/mail/someone_new/Maildir/.INBOX/.imap.index.log: Resource 
temporarily unavailable

and then:

Aug 31 14:00:58 xxx imap(someone): Couldn't lock modify log file 
/var/mail/someone_new/Maildir/.INBOX/.imap.index.log

and finally:

Aug 31 14:26:35 xxx imap(someone): Corrupted modify log file 
/var/mail/someone_new/Maildir/.INBOX/.imap.index.log: used_file_size 
larger than real file size (4096 vs 2576)

MTA is qmail 1.03 (with procmail v3.22)

TIA,
Fredrick

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