"No one is unhappy with Mac OS X Version 10.4, known as Tiger. OS X is not an application platform that needed repair, speeding up, or exterior renovation. Motivations for major upgrades of competing system software - roll-ups of an unmanageable number of fixes, because the calendar says it's time, or because users are perceived to have version fatigue - don't apply to OS X. People buy Macs because the platform as a whole is perfect, full stop. Leopard is a rung above perfection. It's taken as rote that the Mac blows away PC users' expectations. Leopard blows away Mac users' expectations, and that's saying a great deal."