Recently I fell into trouble with my White MacBook. It was heating beyond 80 degrees Celcious and at the same time the fan was rotating at 6200 rpm. I bought a cannister of compressed air to try and blow anything that might be stuck in the fan but instead the fan stopped working!
So I opened the MacBook myself since it was already after midnight and cleared the fan from the inside. The MacBook now runs fine and rotates at 3000 rpm with <50C (quite cool since the ambient temperature is 35C) with a movie playing and NNW & Mail running at the background.
Here is a nice pic I took for you.
/me slaps himself :o)!< -< How To Look Like A UNIX Guru
thinking of using this one instead of digg.