Is there any Ruby processes get started?
Anything in Rails logs file? LSWS error.log and stderr.log?
4.x comes with a new RailsRunner.rb to support Rack, if you revert back to 3.3.24, you should copy over the old RailsRunner.rb, but 3.3.24 wont work with Rails 2.3.2 , only earlier Rails releases.