I know mongrel is the default server for "script/server" but when I do that command I get webrick. (I had it working before with mongrel). Now when I tell is to use mongrel ("script/server mongrel") the server fails to start up in the terminal. I get this:

$ script/server mongrel
^C/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/gems.rb:11:in `require': Interrupt
    from /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:17
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:36:in `require'
    from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.3/lib/active_support/dependencies.rb:156:in `require'
    from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.3/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.3/lib/active_support/dependencies.rb:156:in `require'
    from /Library/Ruby/Gems/1.8/gems/rack-1.0.0/lib/rack/handler/mongrel.rb:1
    from /Library/Ruby/Gems/1.8/gems/rack-1.0.0/lib/rack/handler.rb:17:in `const_get'
    from /Library/Ruby/Gems/1.8/gems/rack-1.0.0/lib/rack/handler.rb:17:in `get'
    from /Library/Ruby/Gems/1.8/gems/rack-1.0.0/lib/rack/handler.rb:17:in `each'
    from /Library/Ruby/Gems/1.8/gems/rack-1.0.0/lib/rack/handler.rb:17:in `get'
    from /Users/devinross14/.gem/ruby/1.8/gems/rails-2.3.3/lib/commands/server.rb:45
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
    from script/server:3

I just upgraded to snow leopard if that helps...