just wanted to let the record show - we run compulive every sunday on a 2GHz iMac running bootcamp with windows XP. runs great (great as in as good as anything ever runs on a PC) I too would love to see compulive built for the mac, but I think I can see the development troubles with this being outweighed by the costs associated. I think I would rather see the compulive team's energy poured into improving what is already a very good, affordable lighting solution.
As one other note - we also use the 3d simulation software week to week to write cues for all of our moving lights and such, and it also runs well on the iMac.