Hello all, I've got a MacBook Air and use it for some light video work. As such, I need to keep an eye on my available space left on the HD. I've downloaded several programs from the App Store, FreeSpace being the latest, and all of them seem to show less room than is truly available. Most of the time the apps show about 15 GB less than just going to my HD icon and hitting apple-I. Is there a reason this would occur or am I doing something wrong? Thanks a bunch in advance!