Not receiving response from facebook

Question

I have a problem when I send a post to my wall from my iPhone app. I have all the delegate methods implemented and the method:

 -(void)request:(FBRequest *)request didReceiveResponse:(NSURLResponse *)response {
    // Keep this just for testing purposes.
    NSLog(@"received response");
}

My app works, the post appears on my wall, but my app doesn't get any response and stucks at my activity indicator. Nothing appears in the console from NSLog.

Does any one know, where's the problem? I'm dying here :-/

EDIT:

- (IBAction)fbButtonPressed:(id)sender {

// Create the parameters dictionary that will keep the data that will be posted.
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                               @"330334280387192", @"app_id",
                               nil];

// Publish.
[self.facebook dialog:@"feed" andParams:params andDelegate:self];

}

I'm using the feed dialog for user input