In standby mode (that is, turned off but still plugged into the wall), the Power LED blinks.
I hate things that blink when they're turned off. Blinking is a way to attract attention, not a way to indicate "you can safely ignore me".
I don't really think there needs to be any indication of "standby" at all. It should suffice for the machine to either be "on" or "off". But if for some reason there just has to be a separate standby visualization, then it should be something less obtrusive. For instance, they could use a bicolor yellow/green LED, turning it to yellow in standby and green when on.
Standby LED
The LEDs kinda' get to me too after a while. I wish they had an upgraded front panel board that any current user can purchase that does away with LEDs entirely. Something like the GS3 that lights up with a cool blue light would be really nice but that machine is "overprice city", you get what you pay for (is the saying), with that machine you sure get it allright...in more ways than one.