iPhone - 运行应用程序的多个实例？

When i start my app for the first time after installing it and exit before the splash screen disappears, from then on launching from the multitasking menu it comes up with a black screen. If I click on it from the home screen it loads fine but every time I try from the multitasking menu it is a black screen until I terminate it. If I add the UIApplcationExitOnSuspend property to the properties list the black screen continually appears until i restart the device. Any help is appreciated.When i start my app for the first time after in