I'm running a dual monitor setup on an NVidia graphics card. Last night, I just started having this problem where the mouse curser won't 'lock' to my primary monitor when I'm playing a video game. In other words, the mouse is free to move around both monitors. If I click while the mouse is on my secondary monitor, it minimizes the game. This starts to get annoying really fast, especially on games where it takes a while to minimize. I have looked around the forums here and can't seem to find any information on how to fix it. If anybody can help me get this back to how it was before, it would be appreciated.