I just read a review here where it is described as a black comedy by someone who saw it and reviewed it. A critic I know oddly enough.
Here is the link:
http://www.nashvillescene.com/Stories/Arts/Film/2007/09/20/One_Week_Seven_Days_33_Films/
That’s pathetic, though typical, that a film would change the race of the perp. Recall that in THE SUM OF ALL FEARS the terrorists miraculously were changed from Muslims (in the novel) to white supremacists.