Okay, what the fuck?

The power button on the front of my computer tower "blinks" when the computer is in sleep mode. Considering that I rarely, if ever, shut off my computer, this is very annoying, also considering that the tower is literally just a couple feet away from where I sleep, and the bright blinking light wakes me up.

Anyone have any idea how to get the light to not blink when the computer goes into sleep mode?