I don't know.. the lines between dreamland and reality are blurring.. I dream about computer hardware.. sad sad life I live.. If I hit the sack at five.. I'm good.. if I hit the sack anytime earlier.. It takes a bit.. but yeah... HEAT .. is a big anti sleep causer.. it's gotta be nice and cool ... I've installed fans on my ears, one in one out, to keep the 5 gig SMP processor nice and coooooool, and my skull is made out of highly thermodynamic aluminum/copper alloy.