title: Rails initializes extremely slow on ruby 1.9.1
body: <p>I just got my rails 2.3.8 app running on ruby 1.9.1. To get into the console, start the webserver, anything that initializes rails, takes 3 - 4 times longer in ruby 1.9 than in ruby 1.8.7. I'm using ruby version managers so I can easily switch between ruby 1.9 and ruby 1.8.7. The speed difference happens in both production and development. I want to use 1.9 because its must faster once everything is running, but the startup time is so bad the app is timing out on Heroku on the first request.</p>
  
  <p>Any ideas why ruby 1.9 would be 3 - 4 times slower? I can't figure it out for the life of me.</p>