I have 9 on an old G5 iMac and it works great. Except any file with a period in the name will not update and one cannot simply copy the updated files over from 10. I have asked several times if this might be fixed but I am fearing 9 is dead. I really was hoping for no new development on 9 beyond base care taking of it but unfortunately it does not appear that will be happening. I know one day files will be release requiring 10, I am hoping that NIB when it is released is 9 compatible because that is a big reason for me to want the NIB in Accordance, not that the other company is getting the NIB released quickly despite their email to me stating production should be able to start soon.