Stuck on "No route matches" when porting to rails 3.0

I don't do anything special. This default route setting should work. But
it doesn't.

Portal::Application.routes.draw do |map|
  map.root :controller => "portal", :action => "logout"
  map.connect ':controller/:action/:id'
  map.connect ':controller/:action/:id.:format'

I am also not able to install rails_upgrade plugin due to some problems
with gem versions so I don't know if any other changes should be done to
controllers in order to work.