IMAP root?

Hi all, just downloaded Round Cube and it looks great. I've been playing with it for an hour or so. I seem to be having a problem using the imap root setting though. I have tried setting the imap root to 'mail', '/mail', 'mail/' and '/mail/' and none seem to work. The only one that really does anything is 'mail' and that causes folders in users' home directories to be created as mailSent, mailINBOX and so on. I store all of my mail folders in my home directory under mail/ and I'd like to not change it.

I currently use Thunderbird as my mail client and in it's imap root I have specified 'mail' which works fine with my server. I am running the latest version of UW-IMAP.

Any clues?

Thanks, Jason von Nieda