This is also occasionally happening to me and installing it (/usr/sbin/incept led-event-notifier_2.0_armel.deb) again makes it work again. Maybe somehow the phone automatically turns off or kills the process? is there such command to just like make the process run again?

And one more thing, is there a way to change the way the LED blinks? e.g it blinks i think for every 2-3 seconds, I want it to blink every .5s is it possible? Maybe it was mentioned but I cant exactly get it how so any help will be appreciated