I have an iPod Touch. When I turned it on today I find that most of the installed apps (2 or 3 paid but most freebies) are simply an icon. When I go to open an app it never progresses beyond the home screen. The only exceptions are the Apple included apps (camera, etc). Sync'ing does nothing.
1. What happened?
2. I guess this means re-installing everything?
3. Should I update to iOS 5.0.1 first?