my parents were installing leopard onto their new iMac and told me that at arond 40% it brought up a message saying the disc may need to be cleaned since it had trouble reading. So he ejected the disc and is back in Tiger fine. But my dad goes to install Leopard again, he says he gets the spinning ball of doom. It has been like that for about 40 minutes. Is it FUBAR? I don't want him to have to reinstall Tiger and all the stuff I spent 2 hours loading on then have to install Leopard again.