Another one: Maybe it's another terrorist group (or worse, perhaps an ally? shudder). Since Bin Laden is the obvious suspect, the real perpetrators are off the hook, or at least not on top of the list. They had a guy on the receiving end of all the hate and blame without asking for it. Bsteph-- that was one of my theories, too -LOL- but, if the US wanted something to precipitate their anti-terrorist programs, then why paralyze a huge chunk of their business sector? Yup, way too much.