Energy Settings

I optimise the settings for Power SUpply to maximum speed and for battery to longest battery life.
King Kong wrote on :
Hi I have a powerbook 15" 1 GHz G4 Al and have some problems with the powr savings settings. When I am connected to the power supply I want full speed, with the battery in use I want longest battery life. So I use the settings in the system preferences. I optimise the settings for Power SUpply to maximum speed and for battery to longest battery life. But it does not switch it. When I diconnect the computer from the power supply it shows me Battery but does not change the settings to longest battery life but stays at maximum speed. What am I doing wrong? Kay