14 DAY TRIAL // Oracle VM VirtualBox has been promoted to version 4.2.12 Build 84980 on OS X platforms, delivering tons of tweaks and bug fixes for those who enjoy using an open source solution.
A mile-long changelog accompanies the release, mentioning tons of GUI fixes for multi-screen support.
For example, the update fixes a crash on visual-mode change, and allows disabled guest-screens to remain disabled on visual-mode change.
Users now get handle host/guest screen plugging/unplugging in different visual-modes, as well as some bug fixes for when empty seamless screens are represented by fullscreen windows.
For Mac OS X hosts only, each machine window in multi-screen configuration now has the correct menu-bar, while the machine window View menu should have correct content in seamless mode.
More information on this iteration can be found in the release notes, here.