News for hackers. Stuff that matters.
Re:Apple releases OS X Mavericks 10.9.2 with SSL fix by acdha on Tuesday February 25, 2014 @02:29PM (#7299843)
This changed back when 10.9 was released:

http://support.apple.com/kb/HT5869

Re:Apple releases OS X Mavericks 10.9.2 with SSL fix by randomdata on Tuesday February 25, 2014 @05:00PM (#7300936)
The parent is correct. In 10.9, pressing the power button put the computer to sleep, replacing the dialog prompt shown in your link. As of 10.9.2, simply pressing it does nothing at all.