fair enough. i was just hoping you weren't suggesting the stuff some people do about the government planning wargames to distract the military, etc. because that's all absurd, fabricated bullshit. there's a reason the morons spouting that stuff don't cite their sources - "my paranoid imagination" doesn't come across as very credible.
it's undeniable that the CIA missed warning signs and screwed up. but i don't think there's any significant evidence to say it was intentional. it's also hard to pin on bush in my opinion - i'm no bush fan, but clinton's 8 years rendered the intelligence community all but completely impotent. by the time tenet became DCI in 1997, the agency's manpower had been cut by 25%. and things didn't get any better thereafter. check out this article:
http://www.commentarymagazine.com/cm/main/viewArticle.html?id=10897&page=all
the only thing close to a conspiracy i'm willing to concede as possible at this point is something along these lines: in the mid to late 90's, high-up people at CIA (and also probably DIA, FBI, NSA, etc.) were warned about al Qaeda and the possibility of an attack on US soil in the near-future. they didn't have the manpower or money to do anything about it. and maybe they thought, "if it does happen, we'll finally get what we need to do something."