Just in addition to to post number 2 -
Config warning also goes off due;
TE flap asymetry or uncommanded motion
LE uncommanded motion
If there is pressurised hydraulic fluid in the spoiler control valves
and just to correct the speed brake (number 6 i think) -
Speed brake lever NOT in the down detent.
If the speedbrake lever IS down but spoilers are not stowed then a light is illuminated in the f/d "Speedbrake Extended" however im presuming that if they were not stowed then there must be hydraulic fluid keeping them from doing so in which case - in a round-a-bout way WOULD cause the config alarm.
