Hi, There has been numerous threads lately regarding heat and the latest Santa Rosa Macbook Pros. Can you please share what temperature your Macbook Pro is at before the fans start spinning? Or perhaps the fans spin all the time but the level of noise is not perceptable? You can use Temperature Monitor to check the temperature: http://www.bresink.de/osx/TemperatureMonitor.html I'll begin: Fan always on (lowest temp so far is 42 degrees Celsius); very low noise. Thanks.