stop lubuntu 11.04 blanking screen.
etc etc etc
Turns out lubuntu 11.04 uses xfce4-power-manager-settings. So to stop the screen blanking / going to sleep / turning off all you need to do is press ALT F2 (Run command) then enter
and then you can set the screen to never turn off! Yay
Don’t know why this isn’t in the System or Preferences menu…