disabling shared namespace

[Bron Gondwana]

On Mon, Jul 25, 2011 at 10:45:10AM -0400, John Madden wrote:
> Our issues with cpu usage with very large mailbox databases (4 million 
> mailboxes) persist and I started poking at source code this morning, 
> finally having time to look for a fix again.
> 
> I originally wrote about this some time ago:
> 
> http://comments.gmane.org/gmane.mail.imap.cyrus/32964
> 
> Again, we have no use for a shared mailbox namespace but there doesn't 
> appear to be any way to easily disable it.  Could it be as simple as 
> just removing everything but NAMESPACE_INBOX from the enum in 
> imap/mboxname.h?  In other words, if we change it to

Have you tried foolstupidclients?

       foolstupidclients: 0
            If enabled, only list the personal namespace when a  LIST  "*"  is
            performed (it changes the request to a LIST "INBOX*").

Bron.