Added migration that downcases all usernames. This should solve the "Can only login via password reset" problems

db/migrate/20110421120744_downcase_usernames.rb

@@ -0,0 +1,13 @@
+class DowncaseUsernames < ActiveRecord::Migration
+  def self.up
+    execute <<SQL
+      UPDATE users
+      SET users.username = LOWER(users.username)
+      WHERE users.username != LOWER(users.username)
+SQL
+  end
+
+  def self.down
+    raise ActiveRecord::IrreversibleMigration.new
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20110406203720) do
+ActiveRecord::Schema.define(:version => 20110421120744) do
 
   create_table "aspect_memberships", :force => true do |t|
     t.integer  "aspect_id",  :null => false