Does anyone else find when you place the laptop on your lap it starts to burn your nads and the inside of your thighs?

I'm serious!
Even after a 10-15 minute break my nads seem to feel like warm pebbles in the summer sun. And this is without an on board graphic's card.

Most uncomfortable, anyone got a solution which does not bugger up the ventilation? Those cooler things any good?

-Naderio