Remember when about a week before the elections, we bombed a Pakistani "school" for al Qaeda trainees, and the Pakistanis released a statement that the school was known to be a hang out for al Zawahri, but that he wasn't there at the time?
It's interesting that we've not heard from either al Zawahri or bin Laden since. al Zawahri usually comes out with a statement letting us know he's still alive when we do something like that.
I have a sneaky suspicion that we got both of em. It's fueled in part by the fact that the Pakistanis were so quick to claim we missed. The last thing they want is to appear that they gave up al Zawahri and bin Laden to us.
That or we still have Zawahiri 'contained' in his 40 sq.mile 'habitat'.