Perform a different stress test (I recommend Prime95), and during that test monitor temperatures with RealTemp.
If that turns out to be ok, your CPU most likely doesn't have an overheating issue.
If it indicates an overheating issue, check your CPU cooler (Does it work? Is it properly seated? Is it free of dust? Is the thermal paste properly applied?).
I happened to check cpu cooler ( heat-sink mounted on the head of cpu), it was little loosened which is ok now, Apart from that only thing I do not know if the material is faded out and if I need to replace it ( some TIM or something that's used at the contact point between heat-sink and processors head) because the cpu fan noise is still coming !!!.-:)
Apart from this more or less I think I had tried almost all the things suggested in thread yseGuy but issue remains so.
What I am surprised at is the CPU utilization suddenly goes up for say just one application opened....
please see my original post, it is having one text attachment which is having the output after I run the test.
I would recommend waiting for different version of the IPDT, there are some customers reporting some issues with version 3.0.025.