diff --git a/lib/noosfero/api/api.rb b/lib/noosfero/api/api.rb
index 6489f4d..2d5fd60 100644
--- a/lib/noosfero/api/api.rb
+++ b/lib/noosfero/api/api.rb
@@ -11,9 +11,9 @@ module Noosfero
       logger.formatter = GrapeLogging::Formatters::Default.new
       use GrapeLogging::Middleware::RequestLogger, { logger: logger }
 
-      rescue_from :all do |e|
-        logger.error e
-      end
+      #rescue_from :all do |e|
+      #  logger.error e
+      #end
 
       @@NOOSFERO_CONF = nil
       def self.NOOSFERO_CONF
@@ -25,6 +25,7 @@ module Noosfero
         end
       end
 
+      before { set_locale  }
       before { setup_multitenancy }
       before { detect_stuff_by_domain }
       before { filter_disabled_plugins_endpoints }
diff --git a/lib/noosfero/api/helpers.rb b/lib/noosfero/api/helpers.rb
index f97d879..e1fe3c0 100644
--- a/lib/noosfero/api/helpers.rb
+++ b/lib/noosfero/api/helpers.rb
@@ -7,6 +7,10 @@
 
       include SanitizeParams
 
+      def set_locale
+        I18n.locale = (params[:lang] || request.env['HTTP_ACCEPT_LANGUAGE'] || 'en')
+      end
+      
       def current_user
         private_token = (params[PRIVATE_TOKEN_PARAM] || headers['Private-Token']).to_s
         @current_user ||= User.find_by_private_token(private_token)
diff --git a/test/unit/api/users_test.rb b/test/unit/api/users_test.rb
index 5fd9ebe..e0c5980 100644
--- a/test/unit/api/users_test.rb
+++ b/test/unit/api/users_test.rb
@@ -1,3 +1,4 @@
+# encoding: UTF-8
 require File.dirname(__FILE__) + '/test_helper'
 
 class UsersTest < ActiveSupport::TestCase
@@ -19,6 +20,18 @@ class UsersTest < ActiveSupport::TestCase
     assert_equal 'some', json['user']['login']
   end
 
+  should 'not create duplicate user' do
+    params[:lang] = :"pt-BR"
+    params[:user] = {:login => 'some', :password => '123456', :password_confirmation => '123456', :email => 'some@some.com'}
+    post "/api/v1/users?#{params.to_query}"
+    json = JSON.parse(last_response.body)
+    assert_equal 'some', json['user']['login']
+    params[:user] = {:login => 'some', :password => '123456', :password_confirmation => '123456', :email => 'some@some.com'}
+    post "/api/v1/users?#{params.to_query}"
+    json = JSON.parse(last_response.body)
+    assert_equal 'Username / Email já está em uso,e-Mail já está em uso', json['message']
+  end
+
   should 'return 400 status for invalid user creation' do
     params[:user] = {:login => 'some'}
     post "/api/v1/users?#{params.to_query}"
diff --git a/test/unit/user_test.rb b/test/unit/user_test.rb
index 769496b..a34502f 100644
--- a/test/unit/user_test.rb
+++ b/test/unit/user_test.rb
@@ -730,25 +730,6 @@ class UserTest < ActiveSupport::TestCase
     assert_equal 'quire', user.person.name
   end
 
-  should 'generate private token' do
-    user = User.new
-    SecureRandom.stubs(:hex).returns('token')
-    user.generate_private_token!
-
-    assert user.private_token, 'token'
-  end
-
-  should 'check for private token validity' do
-    user = User.new
-    assert user.private_token_expired?
-
-    user.generate_private_token!
-    assert !user.private_token_expired?
-
-    user.private_token_generated_at = DateTime.now - (User::TOKEN_VALIDITY + 1.minute)
-    assert user.private_token_expired?
-  end
-
   protected
     def new_user(options = {})
       user = User.new({ :login => 'quire', :email => 'quire@example.com', :password => 'quire', :password_confirmation => 'quire' }.merge(options))
--
libgit2 0.21.2