After a year of making no large purchases whatsoever, my MacBook Pro has arrived. It's the 15-inch, 2.16GHz, 1GB, 120GB model, by the way. I just have a few quick questions. 1. When is the new OS coming out and how much will it be to upgrade? 2. What factors influence battery life? 3. I noticed I'm already down to 60GB on my hard drive. I have about 25GB of media, so where is all this space going? Could it possibly be the iLife suite? Thanks.