Frankly, there's no way you can spin any of the numbers for it as disappointing, considering it's a low-budget DOCUMENTARY (well, supposedly a documentary, of course.)
You can't even apply the same standards as a low-budget summer comedy, because even those cost a lot more than 911 did.
Over time the box office will decline and it will plummet massively next weekend, obviously and people will gleefully report that. But from an industry standpoint it's an astonishing financial success already.
And people need to forget all this boycott and protest nonsense. All that is is free publicity for it.
Don't know about that because it seems that the theaters were selectively picked in michael moore, rabid hating Bush locations.