As expected, the people who have an obsessive hatred of Bush will put out their own opinions on what the latest NIE says, but as usual, their opinions don't equal facts.
So take a look at the NIE yourself and see what it really says.
Just as a partial excerpt:
We assess that the spread of radical—especially Salafi—Internet sites, increasingly
aggressive anti-US rhetoric and actions, and the growing number of radical, self-generating
cells in Western countries indicate that the radical and violent segment of the West’s Muslim
population is expanding, including in the United States. The arrest and prosecution by US
law enforcement of a small number of violent Islamic extremists inside the United States—
who are becoming more connected ideologically, virtually, and/or in a physical sense to the
global extremist movement—points to the possibility that others may become sufficiently
radicalized that they will view the use of violence here as legitimate. We assess that this
internal Muslim terrorist threat is not likely to be as severe as it is in Europe, however.