ok i pwned my iTouch today and i had to restore a backup of my apps to get installer to work

but now the problem is i don't have any of my apps appearing on the main screen, so i've just been uninstalling and reinstalling them to get it to show up, but a problem comes up with summerboard, it doesn't want to delete

does anyone know how i can get rid of it so i can redownload it later?