Earlier this week, my barely 1-year-old iBook G4 (ver. 10.3.9) had some power issues: the halo on the adapter displayed green (battery fully charged) when it should have shown orange (battery charging). Even left charging overnight, the battery charge never went over 30%, the date/time had to be re-set several times, AND the Energy Saver has vanished (only the icon remains as shown in Sys Pref). When I click on the icon, it says it's loading.....but it never displays. I know I've used it before -- I clearly remember setting the preferences when I first bought my iBook. Per the Genius Bar at an Apple Store, here are the instructions that solved MOST of these issues: do an Archive and Install, electing to save User Preferences, etc.; update software to current standards, and replace the battery via Apple's Battery Replacement Program. (Although I hadn't experienced any "hot battery" problems, it turned out mine was one of those that might cause overheating and power problems.) However, Energy Saver is still Missing In Action so I can't check or change its settings; I'm not savvy enough to review the directory listing to know which files are which. When I double-clicked on "EnergySaver pref pane", the message asked "what application do you want to open this?" How can I resurrect Energy Saver? Thanks!