uw-imapd store the imap mailbox directly in the $HOME directory of the user. It's not very fun if you can connect to the server with ssh for example.
So, I compil all the package of the uw-imapd suite (uw-ipopd, libc-client, mlock and mailutils) with the imap mailbox storage configured to $HOME/Mail of the user.
Theses packages are available for Debian sarge in
my Debian repository.