diff --git a/addons/stock/static/src/js/widgets.js b/addons/stock/static/src/js/widgets.js
index 42821f89a8a..f5e368d9d2d 100644
--- a/addons/stock/static/src/js/widgets.js
+++ b/addons/stock/static/src/js/widgets.js
@@ -254,12 +254,13 @@ function openerp_picking_widgets(instance){
                 return false;
             });
             this.$('.js_qty').focus(function(){
+                oldjsqtyvalue = parseFloat($(this).val());
                 self.getParent().barcode_scanner.disconnect();
             });
             this.$('.js_qty').blur(function(){
                 var op_id = $(this).parents("[data-id]:first").data('id');
                 var value = parseFloat($(this).val());
-                if (value>=0){
+                if (value!=oldjsqtyvalue && value>=0){
                     self.getParent().set_operation_quantity(value, op_id);
                 }
                 
@@ -685,6 +686,14 @@ function openerp_picking_widgets(instance){
             }
 
             return loaded_picking.then(function(){
+                var deferred_pack = new instance.web.Model('stock.picking').call('check_group_pack').then(function(result){
+                    return self.show_pack = result;
+                });
+                var deferred_lot = new instance.web.Model('stock.picking').call('check_group_lot').then(function(result){
+                    return self.show_lot = result;
+                });
+                
+                return $.when(deferred_pack, deferred_lot).done(function(){
                     if (!_.isEmpty(self.locations)){
                         return $.when();
                     }
@@ -693,23 +702,13 @@ function openerp_picking_widgets(instance){
                             self.locations = locations;
                         });
                     });
-                }).then(function(){
-                    return new instance.web.Model('stock.picking').call('check_group_pack').then(function(result){
-                        return self.show_pack = result;
-                    });
-                }).then(function(){
-                    return new instance.web.Model('stock.picking').call('check_group_lot').then(function(result){
-                        return self.show_lot = result;
-                    });
                 }).then(function(){
                     if (self.picking.pack_operation_exist === false){
                         self.picking.recompute_pack_op = false;
                         return new instance.web.Model('stock.picking').call('do_prepare_partial',[[self.picking.id]]);
                     }
                 }).then(function(){
-                        return new instance.web.Model('stock.pack.operation').call('search',[[['picking_id','=',self.picking.id]]])
-                }).then(function(pack_op_ids){
-                        return new instance.web.Model('stock.pack.operation').call('read',[pack_op_ids, [], new instance.web.CompoundContext()])
+                        return new instance.web.Model('stock.pack.operation').call('search_read',[[['picking_id','=',self.picking.id]]])
                 }).then(function(operations){
                     self.packoplines = operations;
                     var package_ids = [];
@@ -725,11 +724,13 @@ function openerp_picking_widgets(instance){
                 }).then(function(packages){
                     self.packages = packages;
                 }).then(function(){
-                        return new instance.web.Model('product.ul').call('search',[[]])
-                }).then(function(uls_ids){
-                        return new instance.web.Model('product.ul').call('read',[uls_ids, []])
-                }).then(function(uls){
-                    self.uls = uls;
+                    if (!_.isEmpty(self.uls)){
+                        return $.when();
+                    }
+                    return new instance.web.Model('product.ul').call('search_read',[[]]).then(function(uls){
+                        self.uls = uls;
+                    });
+                });
                 });
         },
         start: function(){