I'm sure this is a common question, but I was wondering if anybody could suggest steps to take to improve the performance of an aging Macbook. It currently has 2 GB of RAM, but I just ordered 6 GB to push it to the max. Beyond that, what can be done short of a clean reinstallation? Currently running Leopard. I don't have the money right now for a new machine, so I'm hoping to extend its useful life for a while... Thanks!