Hey there guys, I've just received a new external hard drive, and after backing everything up, I'm planning on formatting my iMac and installing a fresh copy of Snow Leopard on it. However, I'm worried that I'm going to lose all app data on my iPhone if I do so. I've backed all my music and apps up, but the app data itself will be lost when I sync my iPhone to the iTunes on the fresh installation, won't it? Because it will think it's a new library? Any thoughts would be appreciated. Thanks.