diff --git a/pandora/annotation/models.py b/pandora/annotation/models.py
index 461691e3..0c0380b1 100644
--- a/pandora/annotation/models.py
+++ b/pandora/annotation/models.py
@@ -108,8 +108,8 @@ class Annotation(models.Model):
             'in': self.start,
             'out': self.end,
             'value': self.value,
-            'created': self.created.strftime('%Y-%m-%dT%H:%M:%SZ'),
-            'modified': self.modified.strftime('%Y-%m-%dT%H:%M:%SZ')
+            'created': self.created,
+            'modified': self.modified
         }
 
     def __unicode__(self):
diff --git a/pandora/item/models.py b/pandora/item/models.py
index bf299a1a..02719167 100644
--- a/pandora/item/models.py
+++ b/pandora/item/models.py
@@ -225,8 +225,18 @@ class Item(models.Model):
         self.update_find()
         self.update_sort()
         self.update_facets()
+        update_poster = False
+        if not settings.USE_IMDB:
+            if self.poster_frame == -1 and self.sort.duration:
+                self.poster_frame = self.sort.duration/2
+                update_poster = True
+            if not self.get('runtime', None) and self.sort.duration:
+                self.data['runtime'] = self.sort.duration
+                self.update_sort()
         self.json = self.get_json()
         super(Item, self).save(*args, **kwargs)
+        if update_poster:
+            tasks.update_poster.delay(self.itemId)
 
     def delete(self, *args, **kwargs):
         self.delete_poster()
@@ -258,40 +268,6 @@ class Item(models.Model):
         self.delete()
         other.save()
 
-    '''
-        JSON cache related functions
-    '''
-    #FIXME: this should not be used
-    _public_fields = {
-        'itemId': 'id',
-        'title': 'title',
-        'year': 'year',
-
-        'runtime': 'runtime',
-        'releasedate': 'releasedate',
-
-        'country': 'country',
-        'director': 'director',
-        'writer': 'writer',
-        'editor': 'editor',
-        'producer': 'producer',
-        'cinematographer': 'cinematographer',
-        'language': 'language',
-        'genre': 'genre',
-        'keyword': 'keyword',
-        'cast': 'cast',
-        'series_title': 'series_title',
-        'episode_title': 'episode_title',
-        'season': 'season',
-        'episode': 'episode',
-        'reviews': 'reviews',
-        'trivia': 'trivia',
-        'rating': 'rating',
-        'votes': 'votes',
-        'alternative_titles': 'alternative_titles',
-        'connections_json': 'connections',
-    }
-
     def get_poster(self):
         poster = {}
         poster['width'] = self.poster_width
@@ -374,12 +350,6 @@ class Item(models.Model):
                 if value:
                     i[key] = value
 
-        #format datetime values
-#       #FIXME: do this in render_tojson
-        for key in i:
-            if isinstance(i[key], datetime):
-                i[key] = i[key].strftime('%Y-%m-%dT%H:%M:%SZ')
-
         i['poster'] = self.get_poster()
         i['posters'] = self.get_posters()
         return i
diff --git a/pandora/item/views.py b/pandora/item/views.py
index 0c4fc7ae..648bb39d 100644
--- a/pandora/item/views.py
+++ b/pandora/item/views.py
@@ -206,8 +206,6 @@ Positions
                     r[p] = m.sort.popularity
                 else:
                     r[p] = m.json.get(p, '')
-                if isinstance(r[p], datetime):
-                    r[p] = r[p].strftime('%Y-%m-%dT%H:%M:%SZ')
             return r
         def only_p(m):
             r = {}
diff --git a/pandora/place/models.py b/pandora/place/models.py
index ca686120..99ea7e3f 100644
--- a/pandora/place/models.py
+++ b/pandora/place/models.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 # vi:si:et:sw=4:sts=4:ts=4
 from __future__ import division, with_statement
-from datetime import datetime
 from django.db import models
 
 import ox
@@ -62,9 +61,6 @@ class Place(models.Model):
                     'south', 'west', 'north', 'east',
                     'lat', 'lng', 'size'):
             j[key] = getattr(self, key)
-
-            if isinstance(j[key], datetime):
-                j[key] = j[key].strftime('%Y-%m-%dT%H:%M:%SZ')
         return j
 
     def save(self, *args, **kwargs):