After a few turns of playing the mouse pointer (icon) gets stuck. The mouse still works but it is hard to keep on playing when you don't see the real position of your mouse pointer.
When I close Galciv2 I have the same problem in Windows. -> no visible mouse pointer.
As a workaround I can activate 'Display pointer trails' in the control panel. This will not get the pointer back but the 'trails' are good enough.
I'm using a GeForce 6600GT with the latest Nvidia drivers and the latest DirectX installed.