When I go to upgrade to ios5, I get a warning I've never seen before about how the update will delete all my apps (and music, etc), and to only upgrade from the computer I normally sync to. I am upgrading from that computer, but I've never actually synced the apps. I've only synced music. When I tried to sync the apps once all it did was delete them. So what's going to happen? I don't want the upgrade to finish only to have an empty phone. It's never done that before, so why would it now?