There is no difference if I change to US Layout, I've also been trying to change back and forward a few times but it showed no effect. I am running the built-in Mac OS X VNC-Server.
By the way I wanted to let you know that I think there's a little bug inside the app, I had the keyboard popped out and opened up the settings menu and what I got was that:
http://cl.ly/1R0l1T2C2w171m0y0F3DI've also experienced that when I was opening up the server list.
Thanks for your help!