I noticed this on the fresh install and after 7 had a few weeks to do all its indexing and such it got better. What I notice is that many do these observations on the fresh install.
Too bad MSFT didn't foresee this and have some off switch marked "I'm going to test the OS for this issue so stop indexing and such."
Don't worry, this is not another Mac vs PC argument. Rather, I had some concerns.
I've successfully installed Windows 7, via BootCamp 3.0, on my 2007 Macbook Pro Santa Rosa. It was a breeze as I have Snow Leopard and used the latest 3.0 BootCamp drivers. But many users have reported increased heat and decreased battery life. This is true for myself as well.
Now, when I load RMClock, WITHOUT any modifications, and look at the monitor, it shows CPU load at approximately 60%, even when my task manager shows 0%. This could be an error on the program's part, or something else.
I kinda wonder if the heat issues have something to do with the mismanagement of the Mac's power features in Windows 7, if that's even an issue. It's the only explanation I can come up with for the increased heat, decreased battery life, and the RMClock 60% CPU load.
Now, knowing this, it would be great if someone could review a similarly configured PC with Windows 7 installed and see how it fares against a BootCamp Mac with Windows 7. The results could tell me if the above issue has an adverse effect on performance. Is someone willing to do this? Perhaps CNET's next review?