This is a neat little new detail in OS X Mavericks: if there are updates available for your system, the Notification will allow you to delay installing them for an hour, or until the evening when your system isn’t busy. And you can actually dismiss the damn thing now without it just immediately popping back up!
John Brownlee is a Contributing Editor. He has also written for Wired, Playboy, Boing Boing, Popular Mechanics, VentureBeat, and Gizmodo. He lives in Boston with his wife and two parakeets. You can follow him here on Twitter.