This past week, my 2006 MacBook has been randomly shutting down. At first, it wouldn't even start up, but now it will periodically turn off while I am in the middle of something important. Before I take it to the Geniuses, I am going to do a clean install of Snow Leopard to see if that solves the problem. Any tips for preserving iLife, my files, and the iWork suite so I can move them back to my MacBook when the reinstall is done? Thanks.