Aero Peek Intermittent

I am running Windows 7 Pro with two monitors at the office. My video card is Nvidia Quatro K600. Aero peek works fine.

On the weekends though I use RDC to work from home. (Just have one monitor there). Aero peek works fine there as well. But when I come in to the office on Monday my aero peek does not work unless I reboot my system.

Is there an easier way to do this?

Thanks.