diff --git a/addons/fetchmail/fetchmail.py b/addons/fetchmail/fetchmail.py
index ba20cda873a..d2e12604f02 100644
--- a/addons/fetchmail/fetchmail.py
+++ b/addons/fetchmail/fetchmail.py
@@ -41,6 +41,7 @@ from openerp.tools.translate import _
 
 _logger = logging.getLogger(__name__)
 MAX_POP_MESSAGES = 50
+MAIL_TIMEOUT = 60
 
 # Workaround for Python 2.7.8 bug https://bugs.python.org/issue23906
 poplib._MAXLINE = 65536
@@ -154,6 +155,8 @@ openerp_mailgate: "|/path/to/openerp-mailgate.py --host=localhost -u %(uid)d -p
             #connection.user("recent:"+server.user)
             connection.user(server.user)
             connection.pass_(server.password)
+        # Add timeout on socket
+        connection.sock.settimeout(MAIL_TIMEOUT)
         return connection
 
     def button_confirm_login(self, cr, uid, ids, context=None):
diff --git a/addons/sale/res_config.py b/addons/sale/res_config.py
index e084d6494b2..4686f276b31 100644
--- a/addons/sale/res_config.py
+++ b/addons/sale/res_config.py
@@ -121,6 +121,8 @@ Example: 10% for retailers, promotion of 5 EUR on this product, etc."""),
         return {}
 
     def onchange_task_work(self, cr, uid, ids, task_work, context=None):
+        if not task_work:
+            return {'value': {}}
         return {'value': {
             'module_project_timesheet': task_work,
             'module_sale_service': task_work,
diff --git a/openerp/models.py b/openerp/models.py
index f6be7cc06db..4161f6a0ebc 100644
--- a/openerp/models.py
+++ b/openerp/models.py
@@ -75,7 +75,7 @@ from .tools.translate import _
 _logger = logging.getLogger(__name__)
 _schema = logging.getLogger(__name__ + '.schema')
 
-regex_order = re.compile('^( *([a-z0-9:_]+|"[a-z0-9:_]+")( *desc| *asc)?( *, *|))+$', re.I)
+regex_order = re.compile('^(\s*([a-z0-9:_]+|"[a-z0-9:_]+")(\s+(desc|asc))?\s*(,|$))+(?<!,)$', re.I)
 regex_object_name = re.compile(r'^[a-z0-9_.]+$')
 onchange_v7 = re.compile(r"^(\w+)\((.*)\)$")