Increased fan noise, CPU temp and random fan rpm bursts when using Leopard

I have a 2.2 Ghz Macbook Pro that I purchased in August 2007. I was running OS X Tiger on my mac till about a week ago when I decided to upgrade to OS X Leopard. Ever since the install, I've been facing numerous problems and issues with the general functionality of the computer. Specifically, the biggest issue relates to increased fan noise and random bursts of increased fan rpm (as monitored using iStat). I did not have any of these issues when using OS X Tiger. Further upgrading to 10.5.1 wasn't helpful either as it did not resolve the issue.

Welcome to Apple Discussions!
It may be worth running the Apple Hardware Test, just in case you have a sensor going out or something like that. Sometimes and upgrade will cause an underlying problem to make itself known.
Did you do an Upgrade as opposed to an Archive and Install or an Erase and Install? If so, there could be some software problem associated with the issues you are having. I tried an Archive and Install, and had so many issues that I went ahead and did an Erase and Install. I've had no problems since.
Good luck!

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thanks for the response.
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MOVED: question regarding CPU temps and latest bios (1.8)

This topic has been moved to AMD64 nVidia Based board.
question regarding CPU temps and latest bios (1.8)

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[email protected]

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M3nth,
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=== EDIT ===
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Increased fan noise, CPU temp and random fan rpm bursts when using Leopard

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