Fuck the critics.
I saw people give bad reviews to both Unbreakable and Signs and I just wanted to punch them in the face, those movies are awesome.
I know the critics are tearing this movie up but critics are lapdogs and they'll canonize a crap movie like Sideways because of it's 'quirky' dialogue and it's 'indie' pretense (I liked it, but you won't find a more overrated movie) and then they'll pile up and jump all over the token odd movie that doesn't follow the preconceived themes and ideas. And if it fails at the box office, then they really start piling on.
M Night's movies, generally, are either brilliant or crap to most people, and I think that says about all that needs to be said. Either you want to see a generic 'wacky' Owen/Luke Nose Wilson date movie comedy or you want to see WIll Ferrell wrestling a panther or playing jazz flute. If you don't the know the difference, you don't know the difference.
I haven't seen it but I think it's got a chance to be good, I wouldn't write it off because of critics, his movies deserve a closer look, IMO. Now, if you don't like his movies, then don't bother in the first place.