Yes, indeed, SmartSleep works great. It gives you a pref pane interface for toggling between sleep, hibernate and 'smart sleep' -- which hibernates if the batt

Yes, indeed, SmartSleep works great. It gives you a pref pane interface for toggling between sleep, hibernate and 'smart sleep' -- which hibernates if the battery is low, but sleeps otherwise. I've been using it for the past ~6 months. Without it, my MacBook would take nearly two minutes of disk activity before sleeping; now, it's sleeping happily within 5 seconds.