This is a new default setting in OS X Mountain Lion.You can disable it by going to the Apple menu to System Preferences and then selecting the Software Update pane.
Automatically updating macintosh applications
Instead, I think it is often sufficient to install every other or possibly every third major update.
For these reasons, I encourage you to make sure your Mac is not configured to automatically install OS X updates.
The reason why I advocate this position is that major updates often introduce significant changes to how things look and operate.
Additionally, some of your applications or peripherals may not be fully compatible with the new operating system.
Mac Update Desktop makes updating your apps as easy as click. Installing apps using a Web browser is slow and complicated. Search for any Mac app in Mac Update Desktop, install with 1-click, launch your app and get back to work!
Installing apps using a Web browser is slow and complicated. Search for any Mac app in Mac Update Desktop, install with 1-click, launch your app and get back to work!
Conversely, to have mac OS and app updates download in the background without asking, select “Download newly available updates in the background”.
Once the update finishes downloading, you’ll receive a notification that it’s available to install.
Before we get to it, there are plenty reasons why you would want to prevent mac OS updates from downloading automatically.