Well we all know that iPhone OS 4 now includes the famous multitasking. But, The apps don't run in the background. They are just in the little multitask dock that is like the same as launching the app from the homescreen. So im wondering if it the apps that have to be built for the firmware 4.0 to be able to fully run in the background like the stock applications. Just a thought. Cuz it seems weird.