diff --git a/activesupport/lib/active_support/i18n_railtie.rb b/activesupport/lib/active_support/i18n_railtie.rb
index a25e951080..4402897f10 100644
--- a/activesupport/lib/active_support/i18n_railtie.rb
+++ b/activesupport/lib/active_support/i18n_railtie.rb
@@ -38,6 +38,8 @@ module I18n
 
   protected
 
+    @i18n_inited = false
+
     # Setup i18n configuration
     def self.initialize_i18n(app)
       return if @i18n_inited
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index fb60ddd9b5..528c96ef3e 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -55,6 +55,11 @@ module Rails
 
     delegate :default_url_options, :default_url_options=, :to => :routes
 
+    def initialize
+      super
+      @initialized = false
+    end
+
     # This method is called just after an application inherits from Rails::Application,
     # allowing the developer to load classes in lib and use them during application
     # configuration.
diff --git a/railties/lib/rails/application/bootstrap.rb b/railties/lib/rails/application/bootstrap.rb
index 9f21d273e6..c9b147d075 100644
--- a/railties/lib/rails/application/bootstrap.rb
+++ b/railties/lib/rails/application/bootstrap.rb
@@ -28,7 +28,7 @@ module Rails
           logger.level = ActiveSupport::BufferedLogger.const_get(config.log_level.to_s.upcase)
           logger.auto_flushing = false if Rails.env.production?
           logger
-        rescue StandardError => e
+        rescue StandardError
           logger = ActiveSupport::BufferedLogger.new(STDERR)
           logger.level = ActiveSupport::BufferedLogger::WARN
           logger.warn(
diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 2c3f61f404..89b151beb6 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -360,6 +360,7 @@ module Rails
       end
 
       def endpoint(endpoint = nil)
+        @endpoint ||= nil
         @endpoint = endpoint if endpoint
         @endpoint
       end
diff --git a/railties/lib/rails/plugin.rb b/railties/lib/rails/plugin.rb
index ceddd25eaa..4988cc3378 100644
--- a/railties/lib/rails/plugin.rb
+++ b/railties/lib/rails/plugin.rb
@@ -74,7 +74,8 @@ module Rails
     initializer :load_init_rb, :before => :load_config_initializers do |app|
       init_rb = File.expand_path("init.rb", root)
       if File.file?(init_rb)
-        config = app.config
+        # FIXME: do we call this for side effects??
+        app.config
         # TODO: think about evaling initrb in context of Engine (currently it's
         # always evaled in context of Rails::Application)
         eval(File.read(init_rb), binding, init_rb)