After playing with the phone a while, I see a long list of apps running on the task bar. I personally don't need this feature, and it's painstaking to close all the apps everytime I use the phone. Am I not aware of a way to close an app instantly? Because when I read an iOS4 preview, iirc it said only if you double click the home button, the app keeps running in the background. I tried both single- and double-click, and in both cases the app was still running. I also remember someone saying you cannot disable multitasking. I'd like other people to confirm this.