Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

At some point when I reinstalled Mac OS X Lion, the application switcher started minimizing apps so that when I switch to one all others minimize.

This causes problems when working with my developer IDE and a browser. Many times throughout my day I want to look at two or more applications at once.

How can I fix this?

share|improve this question

You probably enabled a hidden preference for the experimental single app mode. It can be undone with:

defaults delete single-app
killall Dock
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.