Mac users still on Mac OS X 10.4 (Tiger) systems should be aware that there are no further security or system patches planned for these systems.Apple introduced security and system updates for Mac OS X 10.5 and 10.6 last week, reflecting the company’s historical record of supporting both the current and previous operating system but no previous iterations.The problem here is that Snow Leopard only operates on Intel-based Macs, PowerPC-based Macs must move to Leopard (Mac OS X 10.5) in order to continue to receive OS support. This effectively leaves Mac users running Tiger on a PowerPC-based Mac with two options: Get a new Mac or upgrade to Leopard.Unfortunately, Apple no longer sells Leopard installation discs, leaving PowerPC users who perhaps of necessity must try to keep their computers going for a while longer bef
