[Dovecot] Two namespaces with same prefix.

Hi, I have yet another problem. First let me explain my setup. I used to use pine a lot so there are mbox mailboxes in ~/mail. Recently I added a Maildir too and moved most of the mbox mailboxes into Maildir format. Now I thoght it would be nice to have them all "in line" in Thunderbird so I tried this configuration:

namespace private { separator = / prefix = location = %h/mbox inbox = yes }

namespace private { separator = / prefix = location = maildir:%h/Maildir }

The problem is that with this configuration I cannot access the ~/mail/box mailboxes. Thunderbird responds with "Mailbox doesn't exist: box"

Is such kind of configuration with two namespaces having same prefix unsupported?

Vaclav Haisman