mongrels apache configuration problem

Help! I am trying to configure apache to use the mongrel cluster, but I
know I'm doing something tragically wrong, and am at my wits' end. My
project is called "plx"; if I use the apache config shown below, then
try http://redmine/plx, I get "You don't have permission to access /plx/
on this server."

<VirtualHost *>
  ServerAlias redmine
  ServerName redmine.mydomain
  DocumentRoot /home/redmine/

  Alias /plx /home/redmine/plx/public

  <Directory "/home/redmine/plx/public">
    Options FollowSymLinks
    AllowOverride None
    Order allow,deny
    Allow from all
  </Directory>

  <Proxy balancer://plx_cluster>
    Order allow,deny
    Allow from all
    BalancerMember http://127.0.0.1:9003
    BalancerMember http://127.0.0.1:9004
    BalancerMember http://127.0.0.1:9005
  </Proxy>

<Location /plx>
    RewriteEngine On
    RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f
    RewriteRule ^(.*)$ balancer://plx_cluster{%REQUEST_URI} [P,QSA,L]
  </Location>
</VirtualHost>

I know that mongrel and redmine is working, because wget
http://localhost:9003 on the server returns the Redmine start page. And
it's not that Apache doesn't have access to the /home/redmine/plx/public
directory, since when I remove the location and alias business and set
my DocumentRoot to /home/redmine/plx/public, http://redmine gives the
the Redmine start page as well.

Any help would be hugely, really really hugely appreciated.
Thanks in advance for any help!
-Ed

Forget it, I figured it out. I hugely appreciate my help!