dovecot - Jul 2012 - more dsync problems: Error: proxy client timed out

Hi all,
	I'm using dsync for backups. I recently upgraded to 2.1.7 due to issues
with dsync mirror/backups. 2.1.7 fixed the issue with the guid conflict,
but now I'm seeing this error on a couple of mailboxes:

Error: proxy client timed out (waiting for output stream to flush, 0
bytes left)

	If there are 0 bytes left, why is it trying to flush? I'm using this
command to backup the mailbox:

dsync -vo mail_home=/home/users/user%domain.com backup ssh
vmail at 10.1.2.2 dsync -o
mail_home=/home/.incoming_mail_migrations/users/user%adomain.com

	Any ideas? 

			...Jeff