Hi,
Orbit@Home is still announced. It is not yet active.
Only pre-alpha testing is taking place. For the work they have (and that is ery little), they have enough people.
Astropulse is already finished.
They are done with their work. It was a BETA test for BOINC.
Astropulse has changed its name to "SETI@home/AstroPulse Beta" and you can take part using the following server url:
http://setiathome.berkeley.edu/beta/
SETI@home/AstroPulse Betas solely purpose is for testing a new Seti@home application. This application will replace the now used seti@home BOINC-Client. I don't know if any results of scientific value will result of this project.
PlanetQuest has not even an alpha version of their application.
They are still developing it. Their target is to start alpha testing in the
first part of 2007.
Have fun with other projects.
Laguna