I have just upgraded Leopard to the latest version after seeing a number of comments on various websites. This takes it to 10.5.5 along with a number of other application upgrades. Some of the commenters mentioned hassles with the upgrade but I must say I didn’t notice anything out of the ordinary. The 136MB downloaded in a few minutes and the macbook restarted. The software installed successfully and the machine rebooted again. This did take some time and the “I’m thinking” icon spun gently in the centre of the screen. It then rebooted a second time (more quickly) and the login screen appeared. Login, think about the upgrade for a bit and then the desktop popped into place. All is well on the macbook now. No sweat. All done in about 15 minutes.