On my 1.25ghz Albook it seems as if I put the brightness bar down to one(can still see the screen fine) put hd to sleep when possible, screen going to sleep after 1 minute I get the best battery life. However the variable that I am not sure about is automatic versis reduced. Can you guys really tell a difference in performance when using either or? How much more battery life have you guys noticed using reduced over automatic, and what is the difference neccesarily. Any thoughts and comments would be appreciated. Thank you for your time.