note the first 3 responders to this topic.
note: being the 5th responder has nothing to do with the original topic, as by the 5th response, unrelated spray is encouraged.
You don't even need a wireless card to generate serious EMF from a notebook. Most of those electronics are very poorly shielded. It's pretty ridiculous to ban GPS etc. when laptops are a go.
werd to the wise - maybe hop into some goretex or somethin before sleeping under junipers at grasslands
also do not sleep near random dirt roads unless you like waking at 4:00am to a convoy of trucks and big game trailer.
I was there later saturday night enduring the counting crows with the rest of you. Erik can vouch since I got hit by collateral damage when people threw beer cans at him.