Debug output does not show up in the browser window

On the first page of the ror docs under the “Debugging Rails” section,
it says “Debugging info will also be shown in the browser on requests
from 127.0.0.1.” I can not make this work, I only get the wsod in the
browser, and all the debug output in the log/development.log file. In my
config/environments/development.rb I have the following:

config.action_controller.consider_all_requests_local = true
config.action_controller.perform_caching = false
config.action_view.debug_rjs = true
config.action_controller.debug_routes = true

This is a simple app with not much in it yet. I am doing something
worng? Can someone please help me put the degub info in the browser?

Thanks,
steve