Okay. I have a Macbook PRO 17" with a 160GB hard drive. When I click on the "Macintosh" icon on my desktop and "get info" it says that my capacity is 148.73GB and that I've used 134.28GB only leaving me 14.45GB of availability. For the life of me I can't figure out how the 134GB is calculated. If I click on my username and "get info" the folder size is 103GB. So where is the other 30GB used up at?