brightside eats 0.7W

Powertop shows that brightside is the main cause for wakeups per second when running my M1330 on battery (with power savings from 99-savings). Killing the process saves another 0.7W which is substantial. I tried to shut-off/re-start brightside from the 99-savings script depending on whether on ac_power or not. This did not work since on re-start, brightside wants to connect to gconfd from _outside_ the gnome session which fails (at least I don't know how to do that). I guess brightside polls the mouse for checking its location on the screen. I suggest to reduce that cycle to the lowest tolerable frequency in order to have less interrupts.