There seem to be no end to the irregularities that I experience with Logic 9 on a G5. It turns out that the standard Apple save command apple + S doesn't work. All the other ones like "save as" and using the apple key as a modifier works as expected but not this to say the least rather important one. It cost me a couple of hours work today and I have to warn other people who think about upgrading while running a G5. Apple aren't all wrong when they say it's Intel only.