The best thing about this flick is the Austrian dialect, which makes the movie for a native Austrian much better. Most of my Austrian friends love this movie and i think the dialect is too difficult to understand for German people, which are commercialized by teenie-shockers likes Scream, Black X-Mas, I know what you ...
As I mentioned in the paragraph above Germans maybe don't understand the people speaking because of the dialect and therefore they rate this movie badly.
Sry for ma bad English^^ In Short: One of the best Austrian movie productions... great flick!