When I hibernate my PC the number lock light stays on!

While this is obviously not the end of the world - it is annoying since my
PC is in my bedroom and the num lock light is supprisingly bright.

I should perhaps mention that this is with a Microsoft Wireless Multimedia
Keyboard (the lights are on the reciever) and I'm using the latest Microsoft
64 bit IntelliType Pro drivers (v5.5)

Anyone else have this problem?