I was at a friend's home and noticed on his intel-based iMac the OS level was 10.4.11. My friend said he has done all the software updates. And his computer has Apple 3 year support. So my question: can this iMac with a 2.16 Mhz duel core intel cpu run Leopard My second question: if answer to the 1st question is YES, they should this upgrade have been done automatically/free or does he have to buy Leopard? thank you.