John Gruber of the "Daring Fireball" blog has had a running commentary highlighting this very misconception (see http://daringfireball.net/2012/01/ios_multitasking)
His final word was to point to Fraser Speirs"s excellent post xe2x80x9cMisconceptions About iOS Multitaskingxe2x80x9d.
Part of John Gruber's summary was; "Bottom line: the iOS multitasking bar is not like the command tab switcher on Mac or Windows. It is not a list of currently xe2x80x9crunningxe2x80x9d applications. It is simply a list of your most recently used applications, whether theyxe2x80x99re running in the background, suspended in memory, or completely inactive...Emptying this list of applications is simply needless, mindless, busywork. It was absolutely never intended to be used this way and anyone who does this is just wasting their time."