Eboy--
I'm at the Intel Developer Forum in San Jose at the moment, and went to a Meet The Engineers bash this evening. Over the sushi and Sierra Nevada Pale Ale (where did it all go wrong?), I bumped into one Jeffrey Schiffer who chairs the Bluetooth Aviation working group. I asked him about the UWB report from Langley, and he'd seen it... I think it's fair to say that he didn't see it as at all significant, for the reasons you said before -- the power levels and positioning were very unlikely to be typical of any practical use of UWB.
He also added some interesting asides: the Bluetooth Aviation group had done a lot of research and testing, and the JAA now considered Bluetooth safe to use in flight. And Lufthansa has said that on average at least one mobile phone is on during every flight they make.
Interesting chap. He designed the audio modulator used on the LEM, so when Armstrong said "That's one small step..." the words came through Schiffer's bits. I guess that counts as mission critical...
R