I'm in Seattle and have been running SETI on a number of Macs since it was first made available. I'm currently running it an old Beige G3 that's been upgraded with a 400mhz G3 chip. Does what I need it to do.
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.