rename folder problem with 2.4.4

[Bron Gondwana]

On Fri, Nov 19, 2010 at 09:03:22AM +1100, Bron Gondwana wrote:
> > A single murder server
> > Multiple frontend servers running as imap and lmtp proxy's, where
> > the email clients actually connect to.
> 
> It sounds like a missing defaultpartition or something similar.  Odd...
> I'll see if I can reproduce locally.

http://bugzilla.cyrusimap.org/show_bug.cgi?id=3342

Confirmed.  I'll try to get you a fix today.  I've set it as a blocker
against the next release.