title: Unable to delete a post in news feed using graph api
body: <p>At first I used my app (on facebook canvas) with publish_stream permission to create a post using Graph API, it was success, the post appeared both in my news feed and my timeline. However, when I called Graph API to delete it, using HTTP DELETE <a href="https://graph.facebook.com/" rel="nofollow">https://graph.facebook.com/</a>{post-id}/?access_token={my-access-token}. It returned true, mean that the post is deleted successfully. But it's only deleted on my timeline and still appear in news feed, i can still comment and like it. </p>
  
  <p>Please, tell me what's wrong with it? In the document, they (facebook) didn't mention this.
  How can I delete a post in news feed if my app created this?</p>