Ensure admin is running with manual lock strategy.

test/rails_app/db/migrate/20100401102949_create_tables.rb

@@ -19,7 +19,7 @@ class CreateTables < ActiveRecord::Migration
       t.encryptable
       t.rememberable :use_salt => false
       t.recoverable
-      t.lockable
+      t.lockable :lock_strategy => :none, :unlock_strateagy => :time
       t.timestamps
     end
   end

test/rails_app/lib/shared_admin.rb

@@ -4,7 +4,7 @@ module SharedAdmin
   included do
     devise :database_authenticatable, :encryptable, :registerable,
            :timeoutable, :recoverable, :rememberable, :lockable,
-           :unlock_strategy => :time
+           :unlock_strategy => :time, :lock_strategy => :none
   end
 
 end