Yep. Let's see - "Sum of All Fears" is due at the end of the month, and they left the bomb at the Super Bowl in (even though they changed the city, dammit!).
Where's my tinfoil?
Only the producers, in an inexplicable bout of PC-lunacy, changed the villans from (very believeable) Islamic terrorists to (flight of fancy) "neo-fascists," and rather than the device being a stray Israeli nuke dug up by some Syrian farmer, it's a Russian nuke purchased on the black market.
Unfortunately, that part of it seems pretty plausible.