Index: app/models/site.rb

===================================================================

--- app/models/site.rb	(revision 2383)

+++ app/models/site.rb	(working copy)

@@ -93,8 +93,11 @@

   end

   def tags
-    Tag.find(:all, :conditions => ['contents.type = ? AND contents.site_id = ?', 'Article', id], :order => 'tags.name',
-      :joins => "INNER JOIN taggings ON taggings.tag_id = tags.id INNER JOIN contents ON (taggings.taggable_id = contents.id AND taggings.taggable_type = 'Content')")
+    Tag.find(:all, :select      => "DISTINCT tags.name",
+                   :joins       => "INNER JOIN taggings ON taggings.tag_id = tags.id INNER JOIN contents ON (taggings.taggable_id = contents.id AND
+                                    taggings.taggable_type = 'Content')",
+                   :conditions  => ['contents.type = ? AND contents.site_id = ?', 'Article', id],
+                   :order       => 'tags.name')
   end

   def theme_path
Index: test/fixtures/taggings.yml

===================================================================

--- test/fixtures/taggings.yml	(revision 2383)

+++ test/fixtures/taggings.yml	(working copy)

@@ -7,4 +7,19 @@

   id: 2
   tag_id: 2
   taggable_id: 2
+  taggable_type: Content
+rails_future:
+  id: 3
+  tag_id: 2
+  taggable_id: 5
+  taggable_type: Content
+mongrel_future:
+  id: 4
+  tag_id: 3
+  taggable_id: 5
+  taggable_type: Content
+ruby_future:
+  id: 5
+  tag_id: 1
+  taggable_id: 5
   taggable_type: Content

\ No newline at end of file

Index: test/unit/tagging_test.rb

===================================================================

--- test/unit/tagging_test.rb	(revision 2383)

+++ test/unit/tagging_test.rb	(working copy)

@@ -74,6 +74,6 @@

   end

   specify "should find by tags in site" do
-    assert_models_equal [tags(:rails)], sites(:first).tags
+    assert_models_equal [tags(:mongrel), tags(:rails), tags(:ruby)], sites(:first).tags
   end
 end