Superbar Problems

I'm running Windows 7 64-bit Build 7600 RTM. It runs great but I'm having some issues with the superbar (taskbar). It seems to ignore or not detect when my mouse moves out of it. For example, when you hover over an icon, it has the fancy glow to it and Aero Peek displays the window. However, for me, Aero Peek does not come up, only a tooltip of the window's title. When I move out, the last icon my mouse was over acts as though my mouse is still there.

I cannot figure out why this is happening. Does anyone else have this problem?

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