If you're on a mac, you might want to try the version 331 beta drivers (unreleased, probably waiting for 10.9.2) with CUDA 6. http://forum.netkas.org/index.php/topic,8369.0.html
Direct link: http://us.download.nvidia.com/dMfCTEwWd5bvEIglG4b8ya6U4erhZeeC/WebDriver-331.01.01b07.pkg

I haven't installed them yet as they don't work with CUDA 5.5, though you can move a single library from 331 to the old driver to get the gk110b fix and maintain CUDA functionality.

I plan to do the install this weekend as I have a 4k monitor arriving today or tomorrow and I'll need the drivers for 60hz refresh. Glad to see CUDA 6 is moving along, I'm going to see if I can find a copy to test with 331.