can someone using 10.5.6 on a Mac released before the new MacBooks please do me a favour and go to /System/Library/PreferancePanes and check if EnergySaver.prefpane is version number 4.0? im using the Energy Saver preference pane which came with the new MacBook's Leopard install and i want to put back the old one back which came with Leopard installed on my Core Duo MacBook Pro but i lost my back up! so i want to know if the version from 10.5.0 is the same as 10.5.6. i hope i made sense . p.s. i dont backup the system with Time Machine so i cant go back in Time and get it .