I was also thinking along with the LED light maybe some sort of icon indicator could pop up on the icon tray that blinks ( much like the indicator on the n810 letting you know of an available update) but maybe instead of a exclamation point in it, a question mark could be in it or something. then once you click on it it "simply tells you whats slowing the device down" as far as which app and even gives you choices to close those apps or wait. I guess in a lot of ways it would be like the cpu/load icon for maemo 4 but this one would be a more new user friendly way to know how to identify and handle issues before it slows to much or crashes. it would only complement the LED letting the user know what that certain color pattern indicates, that is flashing.