In the OS 4.0 keynote Steve Jobs told us that multitasking will only be available on the iPhone 3GS and the 3e generation iPod Touch. This is a disappointment for the older iDevice owners. But luckily “Will Strafach” informed us that multitasking will be available on older iDevices when you jailbreak your device and edit the plist-file called N82AP.plist (3G). And he was right, because @DarkMalloc uploaded a movie on YouTube showing multitasking on the iPhone 3G, which works fine. » iPhone OS 4.0 Multitasking On iPhone 3G