A
Andromache
read the rest hereThe demand for iPhone OS multitasking is nothing new. People have been looking for ways to do more than one thing at once on their iPhones for some time. For example, let's say you're chatting on IRC in one application, and you want to hop out to check a Web page. Should you have to disconnect from your IRC session just so you can sneak into Safari? Maybe you want to listen to Pandora radio while shopping at the App Store. Should you have to stop the Pandora music?
http://www.tuaw.com/2010/04/08/iphone-4-0-multitasking/