If you're like me and like to save as much battery as possible you might like this. You may have noticed that the shortest time for sleep is 5 minutes. this can be changed in the file /Library/Preferences/com.apple.PowerManagement.plist:
- open up a terminal
- type 'cd /Library/Preferences' at the prompt
- sudo vi com.apple.PowerManagement.plist
- edit the numbers between the <integer></integer> tags.
- save your changes, logout and log back in.