MPMoviePlayerController still leaking

Programmer Question

I release the MPMoviePlayerController but the memory allocation and the living objects are sill higher than before the object allocation. However if i reallocate the object it doesn't leak more.
My application actually uses alot of media files and the memory consumption it's high. I would like to free up completely the unneeded memory to avoid memory warnings.

Movie player release:

        player.initialPlaybackTime = -1;
        [player.view removeFromSuperview];
        [player stop];
        [player release];

Movie player alloc:

    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"video0_hd.mov" ofType:nil]];
    player = [[MPMoviePlayerController alloc] initWithContentURL:url];
    player.view.frame = placeholder.frame;
    [self.view addSubview:player.view];
    [player play];

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