Is Brad Pitt's "World War Z" film having problems?

Earlier this week we heard news of seven weeks of reshoots, which could explain its release date being shifted from mid-year to the end of the year. This news could hint at problem - Click here...

But now we hear Damon Lindelof has been brought onto the production to rewrite parts of the script, namely issues with the third act, for a movie that's been wrapped since last year? - Click here...