Watched it last night...good flick. Not as scary as I expected, but there are a couple of scenes where you'll find yourself saying "Man that is seriously f*ed up." The direction & cinematography are quite good. Only thing I didn't like was several times in the movie the characters do some amazingly stupid horror-movie-cliche-type stuff, and I was talking to the screen telling them not to be so damn idiotic.
Yes! I want to see this badly. Did it remind you of Resident Evil? I like the grainy look alot from the trailers.
I didn't like the third act twist all the much, but overall it was a fun flick. The "infected" were some of creepiest looking things I've seen in a long time. The Region 2 DVD has an alternate ending and an alternate third act(in storyboards since they never actually filmed it) which would've taken the movie in an entirely different direction.