Konichiwa:
Yeah, at 60hz and 75hz the ghosting is minimal. Try 85hz, which is nominal for 1600x1200 monitors. (Well, 21" ones anyway)
You can try reducing your resolution to 1280x1024 and run it at 85hz - you'll probably see ghosting. I tried two cards and both did this. What monitor are you running?
[edit:] By the way, thanks for running these tests for me.