yeh he is noticeable by his absence alright...I reckon theyre busy grooming some lookalike to look and behave exactly like him so they can put out videos claiming to be the real deal.
There is a good chance I'd bet on it actually Bush is waiting to take Usama down in October in time to be fresh in the minds of the electorate for the November elections. If he doesn't appear dead or captured before then, then my belief in the CIA (in controling world affairs) will be severely damaged.