Permissions problem on mailboxes

I think there is a problem with the permissions in my mailbox setup that is preventing correct reading of mail via Usermin and Dovecot.

Mails are being delivered correctly by Postfix and procmail into the Maildir: ~/.maildir/

Here is a listing of the folder ~john.weissberg/.maildir/

drwx------ 2 john.weissberg weissberg 4096 May 4 22:04 cur drwx------ 2 john.weissberg weissberg 4096 Jun 28 07:23 new drwx------ 2 john.weissberg weissberg 4096 Jun 28 07:23 tmp

From the Webmin Postfix server panel, I can see and read the mail. For example, here is a listing of the contents of ~/.maildir/new/

-rw------- 1 john.weissberg weissberg 470 Jun 28 07:23 1246198999.14545_1.he1.pr

However, when I log-in via Usermin, Usermin indicates the mailbox is empty. Likewise, when I access the mailbox via Dovecot POP, LIST shows 0 messages.

I suspect the problem lies in the permissions for the mailboxes and or mails or the UID assumed by Usermin and Dovecot.

I am using Webmin 1.4.7 with Postfix 2.5.5 and Dovecot 1.1.16 on Gentoo linux.