Shoutbox

Yes. With Folding@Home you download a program that runs calculations to simulate protein folding. The Google toolbar comes with a Google Compute component, which runs the same calculations.

Edit: I might need to clarify it's not really the same program. When you download the Folding@Home program, you are always devoting your idle time to that project. Google Compute simply works on the code its being given; now that's Folding@Home, but in the future this may change.