Searched the web for this and could not find any answers. Hopefully someone here has run into and fixed this. I currently sync my iPhone 4s and iPad 2 to a computer which has iTunes on it, but the music and iTunes library is on an external harddrive. This should work fine. Each time i sync the phone a random 50-100 songs resync on it? Anyone have any ideas why this is happeneing? I am not changing those songs at all.