[Dovecot] (mail_index_sync_update_index): assertion failed

[Doug Luce]

Anyone run into this one?  I'm using test53...

Dec  3 13:08:17 aurora dovecot: IMAP(doug): file mail-index-sync-update.c: line 1160 (mail_index_sync_update_index): assertion failed: (map->records_count == map->hdr.messages_count)
Dec  3 13:08:17 aurora dovecot: child 65942 (imap) killed with signal 6

It doesn't seem to correlate with any particular action.  The only change 
I make to the compilation is to comment out #define HAVE_FREEBSD_SENDFILE

Thanks,

Doug