Click to expand... Just to let you know, 10.5 (which is the last OS X version to run on PPC processors) is no longer receiving security updates since the release of OS X 10.7 back in July 20, 2011.

Apple recently dropped the $19.99 fee for OS X Lion and Mountain Lion, making the older Mac updates free to download, reports Macworld. Apple has kept OS X 10.7 Lion and OS X 10.8 Mountain Lion ...

Mac OS X 10.4.x (Tiger) ships, by default, on a DVD. This poses a problem for Macs shipped without a DVD drive, those with non-functional DVD drives, or those which have had their drives manually ...