Can't Stop Keyboard Waking Vista

Sorry if this is in the wrong place, but here goes

My problem is that I can't stop my Keyboard from waking Vista fro
sleep. I've gone through Device Manager and onto the power managemen
tab for the keyboard and have unticked "Allow this device to wak
computer" but it makes no difference, the keyboard still wakes the pc
I've checked the bios and there's no option to stop the keyboard wakin
the machine there. After unticking the box to stop the keyboard wakin
vista I ran "powercfg -devicequery wake_programmable" and the keyboar
is still shown in the list of devices that can wake the computer.

The keyboard I'm using is an EX110 (Logitech)

I'd really appreciate any help on this.

Thanks

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parasectre