I am using the newest VMWare player on a Windows 7 machine. When I have the player open on one of my two monitors I get some weird behavior.
For instance, if the player is open on monitor 2, and I minimize firefox on monitor 1, my mouse will instantly switch to the monitor 2 and be centered within the VMWare player window.
This happens when I minimize any window after having been working in my VM. I hope there is a setting or tweak that I am not aware of that can remedy this.
EDIT: Through more testing I have found that this only occurs when the VMWare player is full screen on either of my two monitors.
Also, I found people having the exact same issue at: http://communities.vmware.com/message/1244913