I have been following through the below link for Facebook integration and could able to successfully post message on the wall without any issues. I registered an App ID for my iPhone app.
http://gabriel-tips.blogspot.in/2011/10/how-to-post-on-facebook-wall-through.html
But, after a month (not exactly a month, it may be more than 1 month), problem posting the message on the wall with the same application, i.e. App shows "Your message has been posted on your wall!" when executing the code -(void)request:(FBRequest *)request didLoad:(id)result
in this function.
But, it actually have not posted on the wall.
What may be the issue here? Does FB App ID works only for certain time period?