App store logo stuck in notification bar here as well. Happens with apps that need wifi to download. The annoying part is you can't get rid of it until you get a wifi connection. Restarting doesn't work, killing the Amazon app store doesn't work (it will only re-appear next time the store is loaded), clearing cache doesn't work, etc. Annoying. We usually "purchase" the free app of the day, but don't always download it, so now we're basically being forced in to it. D/L then uninstall I guess.