provisioned application icon in finder, circle with a line through it?

I noticed when I build my app with my provisioning profiles either for uploading to my ipod or to the app store, when I do a reveal in finder on the application name in xcode it shows a generic application icon with a white circle and a slash though it. The ones that I haven't provisioned like the example programs I downloaded have a generic application icon, but not the circle with the slash through it. Everything is working fine, just wondering what the circle with the line through it means.