My late 2008 Macbook Pro is running hot with Mountain Lion

I've seen a few messages on here and on other sites about people's MBP's running about 5 to 10degC hotter after installing Mountain Lion.
I've had Mountain Lion for a good 5 days and I've seen no improvement. I've fixed permissions using Onyx, I've reset the PRAM and the SMC and I've also gone through all of my apps to update any that do not run on Mountain Lion.
No improvement.
As I sit here now and type, my MBP is running at 66degC and the fan is at 3000rpm.....I then use smc control to ramp the fan up to 6000rpm.....the temperature drops to around 62degC.....I then set the fanspeed to default. About 2 minutes later, the temperature increases and the fan automatically ramps up again to around 3000rpm. Ive also updated Adobe Flash.
I only have Transmission and Safari open - that's it. Nothing else.
Does anybody have any idea how to resolve this issue or do I need to hold tight and wait for Apple to acknowledge it and issue a corrective patch? Or simply, is it that my machine is on it's deathbed? It worked okay with Lion!
I am almost convinced that Apple are upgrading these new OSX in a way so that we all have to keep going out and buying new MBP's - this isn't going to happen. I will downgrade back to Lion, and then Snow Leopard, if I have to. I will get my full money's worth with this laptop, and then I might consider going back to Windows.....
Any suggestions would be appreciated.
Thanks

First step I take is to make a list of the Apps I have installed that I want in the new setup as well as any irreplaceable folder/files you do not want to lose. Pretty much everything you need is in your User folder but creating the full bootable image will create a copy of everything on your hard drive just incase. A full image with CCC or SuperDuper can also be used to get your system back to square one if things go bad. Time Machine is also a good source to recover data, but I would use one of the other programs so you'll have multiple backups I found it also works best if you use the exact same user name on the new system to prevent file permissions issues.
Read http://support.apple.com/kb/HT2980 for the important stuff. It is out dated but still applies in Lion. iCloud also makes short work out of this as well. On first boot ML asks for your Apple ID, if you are using iCloud syncing Contacts, Calendars/Reminders, Notes and Safari Bookmarks will automatically get restored. All I had to do was replace my email folders and preference files for the hard stuff. On top of that copying from the back up your Documents folder, the Music/iTunes folder is all that is needed for iTunes and Pictures/iPhoto Library restored my iPhoto pictures.
Then go out onto the net and download fresh installs for any third party apps you may use. A quick Google search will generally find any data or other files you need to recover that may be hidden in the file system. It sounds tougher than it is and once you've done it it will be much quicker and easier down the road when you have to do it again. I'm sure I missed lot of info here but check and double check that you have all the data you want back on your new setup before wiping any of your back up drives, give it a few weeks before you commit the drives to backing up your new system.

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    if original is 2.0Ghz intel core 2 duo cpu and 2GB 1066mhz ram..when install mountain lion will very slow , and always lag....
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