This is just me nitpicking and in no way indicative of anything... but... you do not have a centrino Duo. Centrino is not a processor, it is a suite of components that intel has approved. The wireless card, the power management, the battery maybe, the chipset, and the processor all compose Centrino. I really wish that retail outlets would stop calling it the Centrino Proccesor and call it the Core Duo with Centrino Technology. Strictly speaking I don't think that I have a centrino suite (macbook) but, I still have a Core Duo, and better battery life than most other laptops with the same processor (at least in this class... which I guess would be called the portable? It isn't light enough to be an ultraportable... and isn't ballsy enough to be a Desktop Replacement, even if it has replaced my desktop) I just tried to check the temperature of my macbook from Windows (virtualized) but everest doesnt seem to want to read the sensors... so I guess it will have to wait.
Suffice it to say that you are running a dual core processor, in a fairly confined space, with significantly less cooling than a desktop. So I guess what I am getting at is that your temps are fine. But you don't have a Centrino Processor.