For some reason throught the day my iPod makes a chime sound, it does this in the middle of music, when it's in standby mode or any other time. There is no patternto it, it just happens. Although I have noticed it only does it when I have wifi on and am in a wifi area. Anyone know of an app that would do this and how I can turn it off? I have gone through all my apps and turned off everything that has to do with sound notifications but it still does it.