diff --git a/addons/payment_paypal/models/paypal.py b/addons/payment_paypal/models/paypal.py
index 4d5445265ce..cfef739ecb7 100644
--- a/addons/payment_paypal/models/paypal.py
+++ b/addons/payment_paypal/models/paypal.py
@@ -204,11 +204,7 @@ class TxPaypal(osv.Model):
 
     def _paypal_form_get_invalid_parameters(self, cr, uid, tx, data, context=None):
         invalid_parameters = []
-        if data.get('notify_version')[0] != '3.4':
-            _logger.warning(
-                'Received a notification from Paypal with version %s instead of 2.6. This could lead to issues when managing it.' %
-                data.get('notify_version')
-            )
+        _logger.info('Received a notification from Paypal with IPN version %s', data.get('notify_version'))
         if data.get('test_ipn'):
             _logger.warning(
                 'Received a notification from Paypal using sandbox'
diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 755288e03bc..6412d349a1f 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -6187,13 +6187,20 @@ instance.web.form.FieldStatus = instance.web.form.AbstractField.extend({
             val = $li.data("id");
         }
         if (val != self.get('value')) {
-            this.view.recursive_save().done(function() {
-                var change = {};
-                change[self.name] = val;
-                self.view.dataset.write(self.view.datarecord.id, change).done(function() {
-                    self.view.reload();
+            if(!this.view.datarecord.id ||
+               this.view.datarecord.id.toString().match(instance.web.BufferedDataSet.virtual_id_regex)) {
+                // don't save, only set value for not-yet-saved many2ones
+                self.set_value(val);
+            }
+            else {
+                this.view.recursive_save().done(function() {
+                    var change = {};
+                    change[self.name] = val;
+                    self.view.dataset.write(self.view.datarecord.id, change).done(function() {
+                        self.view.reload();
+                    });
                 });
-            });
+            }
         }
     },
 });
diff --git a/addons/website_event_sale/controllers/main.py b/addons/website_event_sale/controllers/main.py
index d3cedeb272c..e0d59f4292e 100644
--- a/addons/website_event_sale/controllers/main.py
+++ b/addons/website_event_sale/controllers/main.py
@@ -23,7 +23,7 @@ from openerp import SUPERUSER_ID
 from openerp.addons.web import http
 from openerp.addons.web.http import request
 from openerp.addons.website_event.controllers.main import website_event
-from openerp.addons.website_sale.controllers.main import get_pricelist
+from openerp.addons.website_sale.controllers.main import get_pricelist, website_sale
 from openerp.tools.translate import _
 
 
@@ -89,3 +89,23 @@ class website_event(website_event):
         except ValueError:
             pass
         return super(website_event, self)._add_event(event_name, context, **kwargs)
+
+
+class website_sale(website_sale):
+
+    @http.route(['/shop/get_unit_price'], type='json', auth="public", methods=['POST'], website=True)
+    def get_unit_price(self, product_ids, add_qty, use_order_pricelist=False, **kw):
+        cr, uid, context, pool = request.cr, request.uid, request.context, request.registry
+        res_ticket = {}
+        if 'line_id' in kw:
+            line = pool['sale.order.line'].browse(cr, SUPERUSER_ID, kw['line_id'])
+            if line.event_ticket_id:
+                if line.order_id.pricelist_id:
+                    ticket = pool['event.event.ticket'].browse(cr, SUPERUSER_ID, line.event_ticket_id.id, context=dict(context, pricelist=line.order_id.pricelist_id.id))
+                else:
+                    ticket = line.event_ticket_id
+                res_ticket = {ticket.product_id.id: ticket.price_reduce or ticket.price}
+                product_ids.remove(ticket.product_id.id)
+        res_options = super(website_sale, self).get_unit_price(product_ids, add_qty, use_order_pricelist, **kw)
+        return dict(res_ticket.items() + res_options.items())
+
diff --git a/addons/website_sale/models/payment.py b/addons/website_sale/models/payment.py
index b1b3c32c269..e54b82c4bdf 100644
--- a/addons/website_sale/models/payment.py
+++ b/addons/website_sale/models/payment.py
@@ -3,6 +3,7 @@ import logging
 
 from openerp import SUPERUSER_ID
 from openerp.osv import orm, fields
+from openerp.tools import float_compare
 
 _logger = logging.getLogger(__name__)
 
@@ -26,10 +27,20 @@ class PaymentTransaction(orm.Model):
             tx_find_method_name = '_%s_form_get_tx_from_data' % acquirer_name
             if hasattr(self, tx_find_method_name):
                 tx = getattr(self, tx_find_method_name)(cr, uid, data, context=context)
-            if tx and tx.state == 'done' and tx.acquirer_id.auto_confirm == 'at_pay_confirm' and tx.sale_order_id and tx.sale_order_id.state in ['draft', 'sent']:
-                self.pool['sale.order'].action_button_confirm(cr, SUPERUSER_ID, [tx.sale_order_id.id], context=dict(context, send_email=True))
-            elif tx and tx.state not in ['cancel'] and tx.sale_order_id and tx.sale_order_id.state in ['draft']:
-                self.pool['sale.order'].force_quotation_send(cr, SUPERUSER_ID, [tx.sale_order_id.id], context=context)
+            _logger.info('<%s> transaction processed: tx ref:%s, tx amount: %s', acquirer_name, tx.reference if tx else 'n/a', tx.amount if tx else 'n/a')
+
+            if tx and tx.sale_order_id:
+                # verify SO/TX match, excluding tx.fees which are currently not included in SO
+                amount_matches = (tx.sale_order_id.state in ['draft', 'sent'] and float_compare(tx.amount, tx.sale_order_id.amount_total, 2) == 0)
+                if amount_matches:
+                    if tx.state == 'done' and tx.acquirer_id.auto_confirm == 'at_pay_confirm':
+                        _logger.info('<%s> transaction completed, auto-confirming order %s (ID %s)', acquirer_name, tx.sale_order_id.name, tx.sale_order_id.id)
+                        self.pool['sale.order'].action_button_confirm(cr, SUPERUSER_ID, [tx.sale_order_id.id], context=dict(context, send_email=True))
+                    elif tx.state != 'cancel' and tx.sale_order_id.state == 'draft':
+                        _logger.info('<%s> transaction pending/to confirm manually, sending quote email for order %s (ID %s)', acquirer_name, tx.sale_order_id.name, tx.sale_order_id.id)
+                        self.pool['sale.order'].force_quotation_send(cr, SUPERUSER_ID, [tx.sale_order_id.id], context=context)
+                else:
+                    _logger.warning('<%s> transaction MISMATCH for order %s (ID %s)', acquirer_name, tx.sale_order_id.name, tx.sale_order_id.id)
         except Exception:
             _logger.exception('Fail to confirm the order or send the confirmation email%s', tx and ' for the transaction %s' % tx.reference or '')
 
diff --git a/addons/website_sale/static/src/js/website_sale.js b/addons/website_sale/static/src/js/website_sale.js
index 823f8e4a9ad..0c51bd80e9f 100644
--- a/addons/website_sale/static/src/js/website_sale.js
+++ b/addons/website_sale/static/src/js/website_sale.js
@@ -73,7 +73,8 @@ $('.oe_website_sale').each(function () {
         openerp.jsonRpc("/shop/get_unit_price", 'call', {
             'product_ids': product_ids,
             'add_qty': value,
-            'use_order_pricelist': true})
+            'use_order_pricelist': true,
+            'line_id': line_id})
         .then(function (res) {
             //basic case
             $dom.find('span.oe_currency_value').last().text(res[product_id].toFixed(2));