guys the first thing we need to do is to find out what profile is the best
for standby
and for continues usage
i recommend a profile uses low voltages on standby mode
and a profile uses medium voltages for continues

then you can edit the dbus-script
to make it load the profile which is useful for standby when the screen is locked or the system is inactive

and load the profile which is useful for continues usage when the screen is unlocked or the brightness is on

the problem is that every single N900 has it's own ability to respond to the voltages provided
some n900s crashes
some n900s doesn't

for my N900 it doesn't crash which makes me lucky