After doing a clean reinstall of snow leopard my macbook now has some sort of SMC fault. The symptoms are: No backlight on the keyboard Battery indicator lights not working Not going into sleep mode when i close the lid Kernal_Task running 300+% of cpu Fan constantly running at 6200rpm These are all tasks performed by the SMC i believe. I have read in a thread that i can no longer find that the SMC could be in a debugging mode and that there is a terminal command to resolve this. If anyone knows anything of this it would be a great help to me. I wanted to try this myself before having to send it off to be repaired.