[Dovecot] 1.0-alpha2: assertion failed

[Wolfram Schlich]

Hi,

I am experiencing some problems with Dovecot 1.0-alpha2:
--8<--
Sep 20 13:54:45 mailgateway dovecot: imap(support): file mail-index-view-sync.c: line 168 (mail_index_view_sync_begin): assertion failed: (!view->syncing)
Sep 20 13:54:45 mailgateway dovecot: child 27047 (imap) killed with signal 6
--8<--
I tried to make it core as described in
http://www.dovecot.org/bugreport.html, but without luck.
The problem only happens to two accounts/users, which are used by more
than one remote user/client at once.

Dovecot OS is Linux 2.4.30 on RedHat 7.3.
Clients are Thunderbird 1.0.6 on Linux and Windows.
The mail storage format is Maildir.
The indexes are stored in memory or in a separate directory (tried
both).

Any hints?
-- 
Wolfram Schlich