I've had my Air since Christmas and am very satisfied with how it has performed thus far. I have recently started using iTunes to listen to music while surfing the web or using other non intensive programs such as Inkscape. It appears that iTunes decreases my battery life considerably more than any other program that I use, even if I have a song on pause. While using iTunes my fully charged battery will display 4 to 3.5 hours of life remaining. When I have iTunes closed my computer will display a battery life of 7 to 9 hours, often with usage times the exceed that. Has anyone had similar experiences with iTunes and poor battery life, or am I doing something wrong here? P.S. I have already calibrated my battery.