I downloaded the installer, quit out of Safari (why?), and
then installed the CS3 full install. The installer hangs after a
few minutes - the progress meter still says 'repairing shared
components' (or something similar) and the progress meter is about
1/3 of the way through.
I tried erasing the install app, redownloading and restarting
my machine. Same deal - hangs about 1/3 of the way through.
I'm currently on FW 8 and have a variety of both Adobe and MM
products installed (multiple copies of some MM ones).