diff --git a/addons/auth_ldap/users_ldap.py b/addons/auth_ldap/users_ldap.py
index 694b0b6b469..994bcdde318 100644
--- a/addons/auth_ldap/users_ldap.py
+++ b/addons/auth_ldap/users_ldap.py
@@ -249,6 +249,10 @@ class users(osv.osv):
             return user_id
         registry = RegistryManager.get(db)
         with registry.cursor() as cr:
+            cr.execute("SELECT id, active FROM res_users WHERE lower(login)=%s", (login,))
+            res = cr.fetchone()
+            if res:
+                return False
             ldap_obj = registry.get('res.company.ldap')
             for conf in ldap_obj.get_ldap_dicts(cr):
                 entry = ldap_obj.authenticate(conf, login, password)
diff --git a/addons/point_of_sale/point_of_sale.py b/addons/point_of_sale/point_of_sale.py
index 1e19821a87d..3fffad332cd 100644
--- a/addons/point_of_sale/point_of_sale.py
+++ b/addons/point_of_sale/point_of_sale.py
@@ -352,6 +352,7 @@ class pos_session(osv.osv):
                 if not cashids:
                     cashids = journal_proxy.search(cr, uid, [('journal_user','=',True)], context=context)
 
+            journal_proxy.write(cr, uid, cashids, {'journal_user': True})
             jobj.write(cr, uid, [pos_config.id], {'journal_ids': [(6,0, cashids)]})
 
 
diff --git a/openerp/osv/orm.py b/openerp/osv/orm.py
index 8e2cd695436..520b2b0f680 100644
--- a/openerp/osv/orm.py
+++ b/openerp/osv/orm.py
@@ -53,6 +53,7 @@ import simplejson
 import time
 import traceback
 import types
+from collections import defaultdict
 
 import babel.dates
 import dateutil.parser
@@ -2660,6 +2661,9 @@ class BaseModel(object):
             if len(constraints) == 1:
                 # Is it the right constraint?
                 cons, = constraints
+                if self.is_transient() and not dest_model.is_transient():
+                    # transient foreign keys are added as cascade by default
+                    ondelete = ondelete or 'cascade'
                 if cons['ondelete_rule'] != POSTGRES_CONFDELTYPES.get((ondelete or 'set null').upper(), 'a')\
                     or cons['foreign_table'] != dest_model._table:
                     # Wrong FK: drop it and recreate
@@ -3812,6 +3816,7 @@ class BaseModel(object):
         """
         readonly = None
         self.check_field_access_rights(cr, user, 'write', vals.keys())
+        deleted_related = defaultdict(list)
         for field in vals.copy():
             fobj = None
             if field in self._columns:
@@ -3820,6 +3825,10 @@ class BaseModel(object):
                 fobj = self._inherit_fields[field][2]
             if not fobj:
                 continue
+            if fobj._type in ['one2many', 'many2many'] and vals[field]:
+                for wtuple in vals[field]:
+                    if isinstance(wtuple, (tuple, list)) and wtuple[0] == 2:
+                        deleted_related[fobj._obj].append(wtuple[1])
             groups = fobj.write
 
             if groups:
@@ -4026,7 +4035,8 @@ class BaseModel(object):
             for id in ids_to_update:
                 if id not in done[key]:
                     done[key][id] = True
-                    todo.append(id)
+                    if id not in deleted_related[object]:
+                        todo.append(id)
             self.pool[model_name]._store_set_values(cr, user, todo, fields_to_recompute, context)
 
         self.step_workflow(cr, user, ids, context=context)