OS X 10.9 Mavericks and Cubase 7

Yeah its one of the bigger additions they made to O SX.
Better multi monitor support.

Personally I only use one screen and make use of the virtual desktops and a trackpad, one for the mixer and one for the project window.
I haven’t and continue to not have any issues worth noting.
The control room bug sound disturbing though, I’ll make sure I don’t touch that!