diff --git a/pandora/archive/models.py b/pandora/archive/models.py
index 52e33957..7ed69840 100644
--- a/pandora/archive/models.py
+++ b/pandora/archive/models.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # vi:si:et:sw=4:sts=4:ts=4
-from __future__ import division
+from __future__ import division, with_statement
 
 import os.path
 import re
@@ -243,12 +243,13 @@ class File(models.Model):
                         resolution=config['resolutions'][0],
                         format=config['formats'][0])
             if created:
-                stream.video.save(stream.name(), chunk)
+                stream.video.name = stream.name()
+                with open(stream.video.path, 'w') as f:
+                    f.write(chunk.read())
             else:
-                f = open(stream.video.path, 'a')
-                #FIXME: should check that chunk_id/offset is right
-                f.write(chunk.read())
-                f.close()
+                with open(stream.video.path, 'a') as f:
+                    #FIXME: should check that chunk_id/offset is right
+                    f.write(chunk.read())
             if done:
                 stream.available = True
                 stream.save()
diff --git a/pandora/archive/views.py b/pandora/archive/views.py
index c690adf3..ae769cb4 100644
--- a/pandora/archive/views.py
+++ b/pandora/archive/views.py
@@ -136,6 +136,8 @@ def upload(request):
                 #float required?
                 position = float(os.path.splitext(name)[0])
                 fr, created = models.Frame.objects.get_or_create(file=f, position=position)
+                if fr.frame:
+                    fr.frame.delete()
                 fr.frame.save(name, frame)
                 os.chmod(fr.frame.path, 0644)
             f.item.select_frame()
diff --git a/pandora/item/models.py b/pandora/item/models.py
index d2c4f367..53642663 100644
--- a/pandora/item/models.py
+++ b/pandora/item/models.py
@@ -971,6 +971,12 @@ class Item(models.Model):
         for f in glob(path.replace('.jpg', '*.jpg')):
             os.unlink(f)
 
+    def save_poster(self, data):
+        self.poster.name = self.path('poster.jpg')
+        poster = self.poster.path
+        with open(poster, 'w') as f:
+            f.write(data)
+
     def prefered_poster_url(self):
         external_posters = self.external_data.get('posters', {})
         service = self.poster_source
@@ -996,12 +1002,12 @@ class Item(models.Model):
             url = self.prefered_poster_url()
             if url:
                 data = ox.net.readUrl(url)
-                self.poster.save('poster.jpg', ContentFile(data))
+                self.save_poster(data)
             elif os.path.exists(poster):
                 with open(poster) as f:
                     data = f.read()
                     if data:
-                        self.poster.save('poster.jpg', ContentFile(data))
+                        self.save_poster(data)
 
     def make_siteposter(self):
         poster = self.path('siteposter.jpg')