Rails - Aug 2006 - Using config.action_controller.asset_host with ActionController::AbstractRequest.relative_url_root

I''m looking for some help with an issue I''m having using an
external
asset host. I''ve got the lines below in my environments/development.rb
file.
# Enable serving of images, stylesheets, and javascripts from an asset server
config.action_controller.asset_host = "http://assets.example.com"
#make rails think it lives in /app
ActionController::AbstractRequest.relative_url_root = "/app"

When I then include the this code in my layouts:
<%= stylesheet_link_tag ''main'' %>
<%= javascript_include_tag :defaults %>
it produces the following output:
<link href="http://assets.example.com/app/stylesheets/main.css"
media="screen" rel="Stylesheet" type="text/css"
/>
<script
src="http://assets.example.com/app/javascripts/prototype.js"
type="text/javascript"></script>
...snipped...

My question is that if I''m serving from an asset host, why does it
have the /app between the hostname and the stylesheets/javascripts? If
I''m using an external host, it shouldn''t know or care where my
application thinks it''s living, right?

Is this a bug, and if it''s not, is there a way I can get around it,
while still having my application live in /app?