diff --git a/addons/account/account.py b/addons/account/account.py
index b0271a4fee1..ac50c25cd6b 100644
--- a/addons/account/account.py
+++ b/addons/account/account.py
@@ -278,7 +278,7 @@ class account_account(osv.osv):
             # ON l.account_id = tmp.id
             # or make _get_children_and_consol return a query and join on that
             request = ("SELECT l.account_id as id, " +\
-                       ' , '.join(map(mapping.__getitem__, field_names)) +
+                       ', '.join(map(mapping.__getitem__, field_names)) +
                        " FROM account_move_line l" \
                        " WHERE l.account_id IN %s " \
                             + filters +
@@ -1538,7 +1538,7 @@ class account_tax_code(osv.osv):
         if context is None:
             context = {}
         move_state = ('posted', )
-        if context.get('state', False) == 'all':
+        if context.get('state', 'all') == 'all':
             move_state = ('draft', 'posted', )
         if context.get('fiscalyear_id', False):
             fiscalyear_id = context['fiscalyear_id']
diff --git a/addons/account/invoice.py b/addons/account/invoice.py
index b5b6fe5977e..4cdaeab9a49 100644
--- a/addons/account/invoice.py
+++ b/addons/account/invoice.py
@@ -1078,7 +1078,9 @@ class account_invoice(osv.osv):
 
     def refund(self, cr, uid, ids, date=None, period_id=None, description=None, journal_id=None):
         invoices = self.read(cr, uid, ids, ['name', 'type', 'number', 'reference', 'comment', 'date_due', 'partner_id', 'address_contact_id', 'address_invoice_id', 'partner_contact', 'partner_insite', 'partner_ref', 'payment_term', 'account_id', 'currency_id', 'invoice_line', 'tax_line', 'journal_id'])
-
+        obj_invoice_line = self.pool.get('account.invoice.line')
+        obj_invoice_tax = self.pool.get('account.invoice.tax')
+        obj_journal = self.pool.get('account.journal')
         new_ids = []
         for invoice in invoices:
             del invoice['id']
@@ -1090,18 +1092,18 @@ class account_invoice(osv.osv):
                 'in_refund': 'in_invoice',   # Supplier Refund
             }
 
-            invoice_lines = self.pool.get('account.invoice.line').read(cr, uid, invoice['invoice_line'])
+            invoice_lines = obj_invoice_line.read(cr, uid, invoice['invoice_line'])
             invoice_lines = self._refund_cleanup_lines(cr, uid, invoice_lines)
 
-            tax_lines = self.pool.get('account.invoice.tax').read(cr, uid, invoice['tax_line'])
+            tax_lines = obj_invoice_tax.read(cr, uid, invoice['tax_line'])
             tax_lines = filter(lambda l: l['manual'], tax_lines)
             tax_lines = self._refund_cleanup_lines(cr, uid, tax_lines)
             if journal_id:
                 refund_journal_ids = [journal_id]
             elif invoice['type'] == 'in_invoice':
-                refund_journal_ids = self.pool.get('account.journal').search(cr, uid, [('type','=','purchase_refund')])
+                refund_journal_ids = obj_journal.search(cr, uid, [('type','=','purchase_refund')])
             else:
-                refund_journal_ids = self.pool.get('account.journal').search(cr, uid, [('type','=','sale_refund')])
+                refund_journal_ids = obj_journal.search(cr, uid, [('type','=','sale_refund')])
 
             if not date:
                 date = time.strftime('%Y-%m-%d')
diff --git a/addons/account/project/report/analytic_balance.py b/addons/account/project/report/analytic_balance.py
index 01cefdd03c8..42e36744cb8 100644
--- a/addons/account/project/report/analytic_balance.py
+++ b/addons/account/project/report/analytic_balance.py
@@ -119,12 +119,12 @@ class account_analytic_balance(report_sxw.rml_parse):
         return (debit-credit)
 
     def _sum_all(self, accounts, date1, date2, option):
+        account_analytic_obj = self.pool.get('account.analytic.account')
         ids = map(lambda x: x['id'], accounts)
         if not ids:
             return 0.0
 
         if not self.acc_sum_list:
-            account_analytic_obj = self.pool.get('account.analytic.account')
             ids2 = account_analytic_obj.search(self.cr, self.uid,[('parent_id', 'child_of', ids)])
             self.acc_sum_list = ids2
         else:
diff --git a/addons/account/wizard/account_move_journal.py b/addons/account/wizard/account_move_journal.py
index fc0953b93fa..02cd614ee5d 100644
--- a/addons/account/wizard/account_move_journal.py
+++ b/addons/account/wizard/account_move_journal.py
@@ -91,9 +91,9 @@ class account_move_journal(osv.osv_memory):
         <form string="Standard entries">
             <separator string="Open Journal Items !" colspan="4"/>
             <group colspan="4" >
-                <label width="300" string="Journal : %s"/>
+                <label width="300" string="Journal: %s"/>
                 <newline/>
-                <label width="300" string="Period :  %s"/>
+                <label width="300" string="Period:  %s"/>
             </group>
             <group colspan="4" col="4">
                 <label string ="" colspan="2"/>
diff --git a/addons/account_followup/account_followup.py b/addons/account_followup/account_followup.py
index 1d0ca8a500c..5bbfe80cc24 100644
--- a/addons/account_followup/account_followup.py
+++ b/addons/account_followup/account_followup.py
@@ -62,12 +62,12 @@ account_move_line()
 class res_company(osv.osv):
     _inherit = "res.company"
     _columns = {
-        'follow_up_msg' : fields.text('Follow-up Message', translate=True),
+        'follow_up_msg': fields.text('Follow-up Message', translate=True),
     }
 
     _defaults = {
         'overdue_msg': '''
-Date : %(date)s
+Date: %(date)s
 
 Dear %(partner_name)s,