I just jailbroke my ipod without wallpaper. I read somewhere that the wallpaper had been buffed by apple to take up much more ram. And after disabling, it seemed ALOT faster. So as of now : Multi tasking = Apple > Backgrounder Wallpaper background = Winterboard > Apple Sad thing is, winterboard doesn't work. I tried using winterboard's user wallpaper but even after several re-springs it did not show the background. So yea, if your willing to be patient for it to be fixed its worth trading no wallpaper for the speed boost.