diff --git a/bin/report/printscreen/ps_list.py b/bin/report/printscreen/ps_list.py
index c3dd6b341bd..b78a98a98a5 100644
--- a/bin/report/printscreen/ps_list.py
+++ b/bin/report/printscreen/ps_list.py
@@ -27,8 +27,10 @@ from lxml  import etree
 from report import render
 import libxml2
 import libxslt
+import locale
 
 import time, os
+import mx.DateTime
 
 class report_printscreen_list(report_int):
     def __init__(self, name):
@@ -87,7 +89,8 @@ class report_printscreen_list(report_int):
             n.text = text
             config.append(n)
 
-        _append_node('date', time.strftime('%d/%m/%Y'))
+        #_append_node('date', time.strftime('%d/%m/%Y'))
+        _append_node('date', time.strftime(str(locale.nl_langinfo(locale.D_FMT).replace('%y', '%Y'))))
         _append_node('PageSize', '%.2fmm,%.2fmm' % tuple(pageSize))
         _append_node('PageWidth', '%.2f' % (pageSize[0] * 2.8346,))
         _append_node('PageHeight', '%.2f' %(pageSize[1] * 2.8346,))
@@ -106,7 +109,7 @@ class report_printscreen_list(report_int):
         for f in fields_order:
             s = 0
             ince += 1
-            if fields[f]['type'] in ('date','time','float','integer'):
+            if fields[f]['type'] in ('date','time','datetime','float','integer'):
                 s = 60
                 strmax -= s
                 if fields[f]['type'] in ('float','integer'):
@@ -132,13 +135,11 @@ class report_printscreen_list(report_int):
 
         new_doc.append(header)
         lines = etree.Element("lines")
-
         tsum = []
         count = len(fields_order)
         for i in range(0,count):
             tsum.append(0)
 
-
         for line in results:
             node_line = etree.Element("row")
             count = -1
@@ -158,10 +159,28 @@ class report_printscreen_list(report_int):
                 if fields[f]['type'] in ('one2many','many2many') and line[f]:
                     line[f] = '( '+tools.ustr(len(line[f])) + ' )'
 
-                if fields[f]['type'] == 'float':
+                if fields[f]['type'] == 'float' and line[f]:
                     precision=(('digits' in fields[f]) and fields[f]['digits'][1]) or 2
                     line[f]='%.2f'%(line[f])
 
+                if fields[f]['type'] == 'date' and line[f]:
+                    format = str(locale.nl_langinfo(locale.D_FMT).replace('%y', '%Y'))
+                    d1= mx.DateTime.strptime(line[f],'%Y-%m-%d')
+                    new_d1 = d1.strftime(format)
+                    line[f] = new_d1
+                    
+                if fields[f]['type'] == 'time' and line[f]:
+                    format = str(locale.nl_langinfo(locale.T_FMT))
+                    d1= mx.DateTime.strptime(line[f],'%H:%M:%S')
+                    new_d1 = d1.strftime(format)
+                    line[f] = new_d1
+                    
+                if fields[f]['type'] == 'datetime' and line[f]:
+                    format = str(locale.nl_langinfo(locale.D_FMT).replace('%y', '%Y'))+' '+str(locale.nl_langinfo(locale.T_FMT))
+                    d1= mx.DateTime.strptime(line[f],'%Y-%m-%d %H:%M:%S')
+                    new_d1 = d1.strftime(format)
+                    line[f] = new_d1
+                    
                 col = etree.Element("col")
                 col.set('para','yes')
                 col.set('tree','no')
@@ -169,7 +188,6 @@ class report_printscreen_list(report_int):
                     col.text = tools.ustr(line[f] or '')
                     if temp[count] == 1:
                         tsum[count] = float(tsum[count])  + float(line[f]);
-
                 else:
                      col.text = '/'
                 node_line.append(col)
@@ -197,7 +215,6 @@ class report_printscreen_list(report_int):
 
         lines.append(node_line)
 
-
         new_doc.append(lines)
         styledoc = libxml2.parseFile(os.path.join(tools.config['root_path'],'addons/base/report/custom_new.xsl'))
         style = libxslt.parseStylesheetDoc(styledoc)
diff --git a/bin/tools/misc.py b/bin/tools/misc.py
index a2712ee006e..9d4ea4d66cd 100644
--- a/bin/tools/misc.py
+++ b/bin/tools/misc.py
@@ -659,9 +659,9 @@ class cache(object):
             if time.time()-self.timeout > self.lasttime:
                 self.lasttime = time.time()
                 t = time.time()-self.timeout 
-                for key in self.cache.keys():
-                    if self.cache[key][1]<t:
-                        del self.cache[key]
+                old_keys = [key for key in self.cache if self.cache[key][1] < t]
+                for key in old_keys:
+                    del self.cache[key]
 
             kwargs2 = self._unify_args(*args, **kwargs)