diff --git a/addons/account/wizard/wizard_account_balance_report.py b/addons/account/wizard/wizard_account_balance_report.py
index 5037b4c23c2..6b40d57df51 100644
--- a/addons/account/wizard/wizard_account_balance_report.py
+++ b/addons/account/wizard/wizard_account_balance_report.py
@@ -63,8 +63,8 @@ period_fields = {
         'help':'Keep empty for all open fiscal year'
     },
     'periods': {'string': 'Periods', 'type': 'many2many', 'relation': 'account.period', 'help': 'All periods if empty'},
-    'display_account':{'string':"Display accounts ",'type':'selection','selection':[('bal_mouvement','With Movements'),('bal_solde','With Balance != 0'),('bal_all','All')]},
-    'date_from': {'string':"          Start date",'type':'date','required':True ,'default': lambda *a: time.strftime('%Y-01-01')},
+    'display_account':{'string':"Display accounts ",'type':'selection','selection':[('bal_mouvement','With movements'),('bal_all','All'),('bal_solde','With balance is not equal to 0')]},
+    'date_from': {'string':"Start date",'type':'date','required':True ,'default': lambda *a: time.strftime('%Y-01-01')},
     'date_to': {'string':"End date",'type':'date','required':True, 'default': lambda *a: time.strftime('%Y-%m-%d')},
 }
 
diff --git a/addons/mrp/mrp.py b/addons/mrp/mrp.py
index 612f2461a7c..c4c850045e4 100644
--- a/addons/mrp/mrp.py
+++ b/addons/mrp/mrp.py
@@ -771,6 +771,18 @@ class mrp_procurement(osv.osv):
         'close_move': lambda *a: 0,
         'procure_method': lambda *a: 'make_to_order',
     }
+     
+    def unlink(self, cr, uid, ids):
+        procurements = self.read(cr, uid, ids, ['state'])
+        unlink_ids = []
+        for s in procurements:
+            if s['state'] in ['draft','cancel']:
+                unlink_ids.append(s['id'])
+            else:
+                raise osv.except_osv(_('Invalid action !'), _('Cannot delete Procurement Order(s) which are in %s State!' % s['state']))
+        osv.osv.unlink(self, cr, uid, unlink_ids)
+        return True
+    
     def onchange_product_id(self, cr, uid, ids, product_id, context={}):
         if product_id:
             w=self.pool.get('product.product').browse(cr,uid,product_id, context)
diff --git a/addons/purchase/purchase.py b/addons/purchase/purchase.py
index 641a54276eb..f71973bca5b 100644
--- a/addons/purchase/purchase.py
+++ b/addons/purchase/purchase.py
@@ -198,7 +198,18 @@ class purchase_order(osv.osv):
     _name = "purchase.order"
     _description = "Purchase order"
     _order = "name desc"
-
+    
+    def unlink(self, cr, uid, ids):
+        purchase_orders = self.read(cr, uid, ids, ['state'])
+        unlink_ids = []
+        for s in purchase_orders:
+            if s['state'] in ['draft','cancel']:
+                unlink_ids.append(s['id'])
+            else:
+                raise osv.except_osv(_('Invalid action !'), _('Cannot delete Purchase Order(s) which are in %s State!' % s['state']))
+        osv.osv.unlink(self, cr, uid, unlink_ids)
+        return True
+    
     def button_dummy(self, cr, uid, ids, context={}):
         return True
 
diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index 9be1c45a8b9..1e25459e1ff 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -253,6 +253,17 @@ class sale_order(osv.osv):
     _order = 'name desc'
 
     # Form filling
+    def unlink(self, cr, uid, ids):
+        sale_orders = self.read(cr, uid, ids, ['state'])
+        unlink_ids = []
+        for s in sale_orders:
+            if s['state'] in ['draft','canceled']:
+                unlink_ids.append(s['id'])
+            else:
+                raise osv.except_osv(_('Invalid action !'), _('Cannot delete Sale Order(s) which are already confirmed !'))
+        osv.osv.unlink(self, cr, uid, unlink_ids)
+        return True
+    
     def onchange_shop_id(self, cr, uid, ids, shop_id):
         v={}
         if shop_id:
diff --git a/addons/warning/warning.py b/addons/warning/warning.py
index 118cb556688..adc68a4c964 100644
--- a/addons/warning/warning.py
+++ b/addons/warning/warning.py
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
 ##############################################################################
 #
-#    OpenERP, Open Source Management Solution	
+#    OpenERP, Open Source Management Solution    
 #    Copyright (C) 2004-2008 Tiny SPRL (<http://tiny.be>). All Rights Reserved
 #    $Id$
 #
@@ -48,8 +48,10 @@ class sale_order(osv.osv):
         message=False
         partner = self.pool.get('res.partner').browse(cr, uid, part)
         if partner.sale_warn:
-            title= "Message",
-            message=partner.sale_warn_msg
+           warning={
+                'title': "Message",
+                'message': partner.sale_warn_msg
+                }
              
         result =  super(sale_order, self).onchange_partner_id(cr, uid, ids, part)['value']
         if result.get('warning',False):
@@ -127,7 +129,7 @@ class product_product(osv.osv):
          'sale_line_warn_msg' : fields.text('Message for Sale Order Line'),
          'purchase_line_warn' : fields.boolean('Purchase Order Line'),
          'purchase_line_warn_msg' : fields.text('Message for Purchase Order Line'),
-    }
+     }
 product_product()
 
 class sale_order_line(osv.osv):