Has anyone else noticed their macbook air (11-inch, Late 2010) fan running constantly?

Since i updated to 10.8.4, i've noticed the fan is running almost constantly on my Macbook Air (11-inch, Late 2010) and the computer gets very hot. I looked in Activity Monitor and saw that both Safari and Finder were using CPU, but it's by no means spiked. Anyone else notice this?

Try resetting your system's System Management Controller (SMC) to see if that helps the problem. The SMC is responsible for managing the feedback for the fans to respond to temperature changes.
See here for how to reset it for your system: http://support.apple.com/kb/ht3964

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