5500 rpm fan speed on MacBook Pro 17"

I've got a MacBook Pro, Core Duo 2.16 GHz at work. It has been working just fine, but for the last six months, the fan speed has gone ballistic! When I wake it from sleep, fan speed is about 1000 rpm, but within ten seconds, the speed builds up to 5500 rpm. CPU use is at 2%, the temperature of the CPU is around 40 degrees.
I've installed smcFanControl, but no matter what I set the fan speed to, it never goes lower than 5500 rpm. If I set it to 6000, it goes up to 6000... I've also reset the PRAM, but with no result
Any hints on this?

Try resetting your SMC.
Resetting the System Management Controller >>
-Bmer
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Hello kiwiwoodz,
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Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
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http://support.apple.com/kb/ht4543
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hia
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ticoy wrote:
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Andryxy wrote:
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5500 rpm fan speed on MacBook Pro 17"

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