diff --git a/addons/account/account.py b/addons/account/account.py
index 3abbe4cef2e..8a2cbdb8451 100644
--- a/addons/account/account.py
+++ b/addons/account/account.py
@@ -301,10 +301,11 @@ class account_account(osv.osv):
                 for fn in field_names:
                     sums.setdefault(current.id, {})[fn] = accounts.get(current.id, {}).get(fn, 0.0)
                     for child in current.child_id:
-                        if child.company_id.currency_id.id == current.company_id.currency_id.id:
-                            sums[current.id][fn] += sums[child.id][fn]
-                        else:
-                            sums[current.id][fn] += currency_obj.compute(cr, uid, child.company_id.currency_id.id, current.company_id.currency_id.id, sums[child.id][fn], context=context)
+                        if sums.get(child.id, False):
+                            if child.company_id.currency_id.id == current.company_id.currency_id.id:
+                                sums[current.id][fn] += sums[child.id][fn]
+                            else:
+                                sums[current.id][fn] += currency_obj.compute(cr, uid, child.company_id.currency_id.id, current.company_id.currency_id.id, sums[child.id][fn], context=context)
             res = {}
             null_result = dict((fn, 0.0) for fn in field_names)
             for id in ids:
diff --git a/addons/hr_expense/hr_expense.py b/addons/hr_expense/hr_expense.py
index f3d5f9657cb..40e0091d05e 100644
--- a/addons/hr_expense/hr_expense.py
+++ b/addons/hr_expense/hr_expense.py
@@ -24,6 +24,7 @@ import time
 import netsvc
 from osv import fields, osv
 from tools.translate import _
+import decimal_precision as dp
 
 def _employee_get(obj, cr, uid, context=None):
     if context is None:
@@ -225,8 +226,8 @@ class hr_expense_line(osv.osv):
         'name': fields.char('Expense Note', size=128, required=True),
         'date_value': fields.date('Date', required=True),
         'expense_id': fields.many2one('hr.expense.expense', 'Expense', ondelete='cascade', select=True),
-        'total_amount': fields.function(_amount, method=True, string='Total'),
-        'unit_amount': fields.float('Unit Price'),
+        'total_amount': fields.function(_amount, method=True, string='Total', digits_compute=dp.get_precision('Account')),
+        'unit_amount': fields.float('Unit Price', digits_compute=dp.get_precision('Account')),
         'unit_quantity': fields.float('Quantities' ),
         'product_id': fields.many2one('product.product', 'Product', domain=[('hr_expense_ok','=',True)]),
         'uom_id': fields.many2one('product.uom', 'UoM' ),
diff --git a/addons/hr_holidays/hr_holidays.py b/addons/hr_holidays/hr_holidays.py
index 3e7a4a1b3a2..a7d9a1129bd 100644
--- a/addons/hr_holidays/hr_holidays.py
+++ b/addons/hr_holidays/hr_holidays.py
@@ -111,7 +111,7 @@ class hr_holidays(osv.osv):
 
     _columns = {
         'name': fields.char('Description', required=True, size=64),
-        'state': fields.selection([('draft', 'Draft'), ('confirm', 'Waiting Approval'), ('refuse', 'Refused'), 
+        'state': fields.selection([('draft', 'Draft'), ('confirm', 'Waiting Approval'), ('refuse', 'Refused'),
             ('validate1', 'Waiting Second Approval'), ('validate', 'Approved'), ('cancel', 'Cancelled')],
             'State', readonly=True, help='When the holiday request is created the state is \'Draft\'.\n It is confirmed by the user and request is sent to admin, the state is \'Waiting Approval\'.\
             If the admin accepts it, the state is \'Approved\'. If it is refused, the state is \'Refused\'.'),
@@ -290,7 +290,7 @@ class hr_holidays(osv.osv):
         for record in self.browse(cr, uid, ids):
             # Delete the meeting
             if record.case_id:
-                obj_crm_meeting.unlink(cr, uid, [record.case_id])
+                obj_crm_meeting.unlink(cr, uid, [int(record.case_id)])
 
             # If a category that created several holidays, cancel all related
             wf_service = netsvc.LocalService("workflow")