Don't cache post URLs, this is not a heavy operation

boards/models/post.py

@@ -209,7 +209,6 b' class Post(models.Model, Viewable):'
 
         return self.get_thread().get_opening_post_id() == self.id
 
-    @utils.cached_result()
     def get_url(self):
         """
         Gets full url to the post.