I can't get this to work in "Smart Sleep" mode. It won't change the setting from sleep only to sleep & hibernate (or vice versa). It says it's updating, but just comes back with the setting the same as it was last set. Even if I manually change the sleep & hibernate level, it updates and then comes back with the setting the same as it was before. I've tried fixing permissions, that didn't work. I've also tried 3 different versions now, the last beta, build 1529 and the latest, build 1531. They all behave the same. I'm running 10.4.10 on a 1.83Ghz Core Duo MacBook (2006) with 2GB of Ram. Anybody know what's going on?