Seriously, Grid computing is an incredible technology and the benefits used by the right organization are wonderful. If you have a chance to donate your hardware to a project grid, please do so...
I totally agree with you Havoc, I have been torturing my p4 for 5 days at 100% load, its around 45 celcius because i have a freezer 7 pro on it, if not it would be around 75 celcius. Meh....my core 2 duo has also been running at 100% but i do not notice too much of a slow down.
My gaming rig has been running @ 100% since about Octoberish...... with the CPU client of F@H, and then switched to the GPU client of F@H in January.... you can see my productivity about tripled... lol. If I could get a nice Socket 939 x2 CPU, then I can run a GPU & CPU client on the same machine side by side.