diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index aff3afba674..b88a103a8df 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -710,6 +710,8 @@ class Session(http.Controller):
 
     def session_info(self):
         request.session.ensure_valid()
+        user = request.env.user
+        display_switch_company_menu = user.has_group('base.group_multi_company') and len(user.company_ids) > 1
         return {
             "session_id": request.session_id,
             "uid": request.session.uid,
@@ -718,6 +720,7 @@ class Session(http.Controller):
             "username": request.session.login,
             "company_id": request.env.user.company_id.id if request.session.uid else None,
             "partner_id": request.env.user.partner_id.id if request.session.uid and request.env.user.partner_id else None,
+            "user_companies": {'current_company': (user.company_id.id, user.company_id.name), 'allowed_companies': [(comp.id, comp.name) for comp in user.company_ids]} if display_switch_company_menu else False,
         }
 
     @http.route('/web/session/get_session_info', type='json', auth="none")
diff --git a/addons/web/static/src/js/widgets/switch_company_menu.js b/addons/web/static/src/js/widgets/switch_company_menu.js
index 67b3ae57b6c..2879a0a2b0d 100644
--- a/addons/web/static/src/js/widgets/switch_company_menu.js
+++ b/addons/web/static/src/js/widgets/switch_company_menu.js
@@ -8,39 +8,28 @@ odoo.define('web.SwitchCompanyMenu', function(require) {
     
     var SwitchCompanyMenu = Widget.extend({
         template: 'SwitchCompanyMenu',
-        willStart: function(){
-            var self = this;
-            var def = $.Deferred();
-            new Model("res.users").call("read_companies").then(function(res) {
-                if (res){
-                    self.all_allowed_companies = res.all_allowed_companies;
-                    self.current_company = res.current_company;
-                    def.resolve();
-                } else {
-                    def.reject();
-                }
-            }).fail(function(){
-                def.reject();
-            });
-            return $.when(this._super(), def);
+        willStart: function() {
+            if (!session.user_companies) {
+                return $.Deferred().reject();
+            }
+            return this._super();
         },
         start: function() {
             var self = this;
-
-            this.$el.on('click', '.dropdown-menu li a[data-menu]', function(ev) {
+            this.$el.on('click', '.dropdown-menu li a[data-menu]', _.debounce(function(ev) {
                 ev.preventDefault();
                 var company_id = $(ev.currentTarget).data('company-id');
                 new Model('res.users').call('write', [[session.uid], {'company_id': company_id}]).then(function() {
                     location.reload();
                 });
-            });
+            }, 1500, true));
 
-            self.$('.oe_topbar_name').text(self.current_company[1]);
+            self.$('.oe_topbar_name').text(session.user_companies.current_company[1]);
 
             var companies_list = '';
-            _.each(self.all_allowed_companies, function(company) {
+            _.each(session.user_companies.allowed_companies, function(company) {
                 var a = '';
-                if(company[0] == self.current_company[0]) {
+                if(company[0] == session.user_companies.current_company[0]) {
                     a = '<i class="fa fa-check o_current_company"></i>';
                 } else {
                     a = '<span class="o_company"/>';
diff --git a/openerp/addons/base/res/res_users.py b/openerp/addons/base/res/res_users.py
index d445a75e02a..10358d34425 100644
--- a/openerp/addons/base/res/res_users.py
+++ b/openerp/addons/base/res/res_users.py
@@ -308,11 +308,6 @@ class res_users(osv.osv):
 
         return result
 
-    def read_companies(self, cr, uid, context=None):
-        user = self.browse(cr, SUPERUSER_ID, uid, context=context)
-        display_switch_company_menu = self.has_group(cr, uid, 'base.group_multi_company') and len(user.company_ids) > 1
-        return {'current_company': (user.company_id.id, user.company_id.name), 'all_allowed_companies': [(comp.id, comp.name) for comp in user.company_ids]} if display_switch_company_menu else False
-
     def read_group(self, cr, uid, domain, fields, groupby, offset=0, limit=None, context=None, orderby=False, lazy=True):
         if uid != SUPERUSER_ID:
             groupby_fields = set([groupby] if isinstance(groupby, basestring) else groupby)