Can't get your point. But at least now it's working.

Gemfile

@@ -1,6 +1,9 @@
 source 'http://rubygems.org'
 
 gem 'rails', '~>3.0'
+
+gem 'authlogic'
+
 gem 'compass'
 gem 'haml'
 

Gemfile.lock

@@ -0,0 +1,137 @@
+GEM
+  remote: http://rubygems.org/
+  specs:
+    RedCloth (4.2.8)
+    actionmailer (3.1.0)
+      actionpack (= 3.1.0)
+      mail (~> 2.3.0)
+    actionpack (3.1.0)
+      activemodel (= 3.1.0)
+      activesupport (= 3.1.0)
+      builder (~> 3.0.0)
+      erubis (~> 2.7.0)
+      i18n (~> 0.6)
+      rack (~> 1.3.2)
+      rack-cache (~> 1.0.3)
+      rack-mount (~> 0.8.2)
+      rack-test (~> 0.6.1)
+      sprockets (~> 2.0.0)
+    activemodel (3.1.0)
+      activesupport (= 3.1.0)
+      bcrypt-ruby (~> 3.0.0)
+      builder (~> 3.0.0)
+      i18n (~> 0.6)
+    activerecord (3.1.0)
+      activemodel (= 3.1.0)
+      activesupport (= 3.1.0)
+      arel (~> 2.2.1)
+      tzinfo (~> 0.3.29)
+    activeresource (3.1.0)
+      activemodel (= 3.1.0)
+      activesupport (= 3.1.0)
+    activesupport (3.1.0)
+      multi_json (~> 1.0)
+    acts-as-taggable-on (2.1.1)
+      rails
+    arel (2.2.1)
+    authlogic (3.0.3)
+      activerecord (>= 3.0.7)
+      activerecord (>= 3.0.7)
+    bcrypt-ruby (3.0.0)
+    builder (3.0.0)
+    capybara (1.1.0)
+      mime-types (>= 1.16)
+      nokogiri (>= 1.3.3)
+      rack (>= 1.0.0)
+      rack-test (>= 0.5.4)
+      selenium-webdriver (~> 2.0)
+      xpath (~> 0.1.4)
+    cells (3.6.5)
+      actionpack (~> 3.0)
+      railties (~> 3.0)
+    childprocess (0.2.2)
+      ffi (~> 1.0.6)
+    chunky_png (1.2.1)
+    compass (0.11.5)
+      chunky_png (~> 1.2)
+      fssm (>= 0.2.7)
+      sass (~> 3.1)
+    erubis (2.7.0)
+    ffi (1.0.9)
+    fssm (0.2.7)
+    haml (3.1.2)
+    hike (1.2.1)
+    i18n (0.6.0)
+    json_pure (1.5.4)
+      spruz (~> 0.2.8)
+    mail (2.3.0)
+      i18n (>= 0.4.0)
+      mime-types (~> 1.16)
+      treetop (~> 1.4.8)
+    mime-types (1.16)
+    multi_json (1.0.3)
+    nokogiri (1.5.0)
+    polyglot (0.3.2)
+    rack (1.3.2)
+    rack-cache (1.0.3)
+      rack (>= 0.4)
+    rack-mount (0.8.3)
+      rack (>= 1.0.0)
+    rack-ssl (1.3.2)
+      rack
+    rack-test (0.6.1)
+      rack (>= 1.0)
+    rails (3.1.0)
+      actionmailer (= 3.1.0)
+      actionpack (= 3.1.0)
+      activerecord (= 3.1.0)
+      activeresource (= 3.1.0)
+      activesupport (= 3.1.0)
+      bundler (~> 1.0)
+      railties (= 3.1.0)
+    railties (3.1.0)
+      actionpack (= 3.1.0)
+      activesupport (= 3.1.0)
+      rack-ssl (~> 1.3.2)
+      rake (>= 0.8.7)
+      rdoc (~> 3.4)
+      thor (~> 0.14.6)
+    rake (0.9.2)
+    rdoc (3.9.4)
+    rubyzip (0.9.4)
+    sass (3.1.7)
+    selenium-webdriver (2.5.0)
+      childprocess (>= 0.2.1)
+      ffi (>= 1.0.7)
+      json_pure
+      rubyzip
+    sprockets (2.0.0)
+      hike (~> 1.2)
+      rack (~> 1.0)
+      tilt (!= 1.3.0, ~> 1.1)
+    spruz (0.2.13)
+    sqlite3 (1.3.4)
+    sqlite3-ruby (1.3.3)
+      sqlite3 (>= 1.3.3)
+    thor (0.14.6)
+    tilt (1.3.3)
+    treetop (1.4.10)
+      polyglot
+      polyglot (>= 0.3.1)
+    tzinfo (0.3.29)
+    xpath (0.1.4)
+      nokogiri (~> 1.3)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  RedCloth
+  acts-as-taggable-on
+  authlogic
+  capybara
+  cells (~> 3.5)
+  compass
+  haml
+  rails (~> 3.0)
+  sqlite3-ruby

app/models/user.rb

@@ -1,3 +1,4 @@
 class User < ActiveRecord::Base
-  #acts_as_authentic
+  acts_as_authentic
 end
+

app/models/user_session.rb

@@ -0,0 +1,3 @@
+class UserSession < Authlogic::Session::Base
+end
+

config/environments/development.rb

@@ -11,9 +11,11 @@
 
   # Show full error reports and disable caching
   config.consider_all_requests_local       = true
-  config.action_view.debug_rjs             = true
   config.action_controller.perform_caching = false
 
   # Don't care if the mailer can't send
   config.action_mailer.raise_delivery_errors = false
+
+  # Log deprecations
+  config.active_support.deprecation = :log
 end

config/routes.rb

@@ -1,4 +1,4 @@
-Blog::Application.routes.draw do |map|
+Blog::Application.routes.draw do
   #match ":controller/tag", :to => "posts#tag"
 
   resources :posts do

db/migrate/20100417235922_create_users.rb

@@ -8,6 +8,9 @@ def self.up
 
       t.timestamps
     end
+
+    # login : test / password : test
+    User.create(:login => "test", :password_hash => "6736ddf84c4a92b2933cc5b74eee3da149c6a71e97ae0cda1421f8adb2d80ef2e43e5131903861d75cd9a61350470e00b98b7b0292627046f814cd3309314cef", :password_salt => "T21ddbyDBLMRKcMtgTV9")
   end
 
   def self.down