This morning I was on the phone to Apple Support because my iPad 2 froze up. While waiting to be connected, it freed itself up. The tech support person said the freeze up may have been caused by having too many apps running. She told me how to quit running apps by double clicking the Home button, pressing and holding on an app at the bottom of the screen until the app icons wiggle, and then clicking on the minus sign on the app (apps) I wanted to quit. These seems awkward because I had more than 20 apps running. Is there a better way to quit an app?