procmail question

[Linda]

I've been playing with delivering mail to the proper mail directory with 
no luck. No matter what I do it delivers the mail to /var/mail/$USER 
instead of to /var/mail/$USER/new or /var/mail/$USER/cur
I even tried making the address explicit instead of $USER putting in a 
users name to no avail. I can  then move the message files to the 
subdirectory and it works for the mail client to pick it up from the 
dovecot IMAP server

Here is what I have in the procmailrc file so what am I doing wrong?

# .procmailrc
# routes incoming mail to appropriate mailboxes
PATH=/usr/bin:/usr/local/bin
MAILDIR=/var/mail/$USER/
Default=/var/mail/$USER/new/


           Thanks
            Linda