I just installed a Snow Leopard on my Macbook, it initially freed up 8gb's of space that number however has shrunk over the past day or so by about 4gb. Any ideas as to why that is? Also I'm using Omni Disk Sweeper to get rid of some stuff and I have a folder containing 7.6gb, the folder is titled "back up" and located in library>application support>mobilesync. Anyone familiar with this? I'm not quite sure if they're back ups from my blackberry, iPod, or iPad. Thanks.