Yep on win7 the cursor looks lovely with all the ghosting. There is a fix that has worked for me. Try this.
Right click on your PCB editor Icon and select properities.
Click on the Compatibility tab.
Check the following boxes. "'Disable Visual Themes", "Disable Desktop Composition" "Run this program as an administrator"
No need to disable Aero on a win7 machine for this to work, just change the properities that launch the PCB editor. No need to disable Open GL either in the PCB Editor though disabling Open Gl will fix that issue but then you will loose a pretty looking board on the screen due to the benifits of open gl
Hope it works for you at that end.