Today I was listening to music and reading through some rss feeds via an app store app. After that my iPod started lagging so I hit home. Then my music started skipping and it was fully frozen I tried turning it off but it didn't work then 5 minutes later when I took it back out it was restarted. My questions are: 1)Could my jailbreak cause that? 2)Could the app cause that? 3)If neither what could have? 4)Is this expected to happen again? 5) What can I do to prevent this from happening if it could happen again?