They are both using my computer. Einstein @Home is using my computer's idle time to search for spinning neutron stars (also called pulsars). And SETI@Home is using it to sort thru information they have gathered over the years. Check it out and see if this is something you want to do, I think it is really exciting. Einstein@Home installs a really cool screensaver on your computer too that kicks in when they are using it.
I have dabbled in these programs also Toni, really great to know you can contribute tangibly to something great. I have used Boinc which allows you to run SETI, Einstein and other similar projects too if you have the CPU to spare.
