Rails - Nov 2006 - Problem with edge rails, controller namespaces and routes

I just upgraded to edge rails so I can use the BigDecimal support for
monetary calculations.  I''ve just come across the following problem..
Right now, I''ve got a content controller which is responsible for
updating much of my site''s content.  I''ve decided to make this
a
subclass of Admin, so I can organize my administrative related
controllers into their own directory.  So I have the following class
definition inside
''app/controllers/admin/content_controller.rb'':

class Admin::ContentController < ApplicationController
....
end

and then in my routes file, I have:

map.with_options(:controller => ''admin/content'') do
|content|
    content.content_list_faq
''admin/content/faq/list/:section'',   :action =>
''list_faq''
end

now, this worked perfectly in Rails 1.1.6, but as soon as I upgraded
to edge, I started getting the following error from one of my views:

content_list_faq_url failed to generate from {:action=>"list_faq",
:controller=>"admin/content"}, expected:
{:action=>"list_faq",
:controller=>"admin/content"}, diff: {}

which doesn''t really make a whole lot of sense, since the expected
looks exactly the same as what I''m using, and the diff hash is empty..

the line causing the error is the following:

<%= link_to(''FAQ Management'', content_list_faq_url) %>

While searching for some advice, I came across the following site
which mentions that using namespaces for controllers is more hassle
than it''s worth, and to just forget about them:

http://glu.ttono.us/articles/2006/08/30/guide-things-you-shouldnt-be-doing-in-rails

so is that the current recommendation? To just forget about controller
namespaces and have everything under the ''app/controllers''
directory?
Or is there something else going on that I''m missing?

Mike