[Dovecot] repeat downloads of message headers in 1.0rc19

[Patrick Audley]

> I've had no reports or evidence of this happening anywhere other than
> INBOX.

Actually, I get the same problem randomly across all my IMAP boxes  
(maildir, Linux, using inotify on rc19, no fancy auth) - it's  
certainly more frequent in the INBOX though.  Same problem, I  
upgraded from rc16 and all of a sudden the flags weren't being  
preserved.  If you wait long enough, you'll see deleted messages  
return as new mail too.