Payne Stewart's business jet crashed due to decompression. But I don't know how the systems of large passenger jets compare to small business jets. (I would think that more passengers+commercial passengers=tighter regulations, but maybe I'm wrong.) It's also strange here that the pilots are unconsious, the passengers know it, and the passengers are still awake.
Payne Stewart's aircraft had a well established engineering design problem with its O2 system. The same cannot be said in a B737 which has at least 3 systems (main/passenger o2/pilot 02).
That's where I was questioning the story. Passengers know, and apparrently for quite some time, no one is flying the plane. How do they know this information? Have terrorists told them? Have the flight attendants told? There's plenty of time to send out the military to look over the situation. I can't believe not one flight attendant or passenger didn't get to the cockpit and try the radio for help and try taking over the controls. Sounds very fishy.