I have recently purchased a new MacBook Air, with my optical drive equipped MacBooks, there is a Shift+Control+Eject key combination that allows you to lock your system by showing the Login Window for Fast User Switching.
With the new MacBook Air, the Eject key has been replaced with a Power key, so the Shift+Control+Eject combination is no longer possible.
Is there a new key combination available?
I could not find a built-in shortcut on the new Air, so this is one option.
– reaganing Aug 12 '11 at 00:05