Is the latch pawl open. Didn't get tripped shut by chance.
I'd pull the latch out and make sure it's cleaned up and locking and unlocking correctly.
If the level the cable pulls on to open is not letting the level return all the way it will not latch.
Otherwise is there anything stopping the hood from going down all the way.
[This message has been edited by Dodgerunner (edited 10-01-2013).]