I'm having an issue with my wallpapers. they won't work! I apply them normally but the themes wont apply or show up in the wallpaper browser in settings. there's a vista wallpaper in there though that I dont think came with the iPod. a while ago I was testing a bunch of vista themes and I think that's where it came from. but anyway it won't go away and none of my themes I download will apply a wallpaper. Are there any ideas as to what is causing this to happen or how to fix it?