Oracle 在 3 月 25 号发布了 VirtualBox 4.3.10，此版本是 4.3 版本的维护版本，主要是提高了软件的稳定性和修复 regression 问题，详情请看更新记录：
This page lists all changes of the VirtualBox 4.3 releases.
All branches: 4.3 · 4.2 · 4.1 · 4.0 · 3.2 · 3.1 · 3.0 · 2.2 · 2.1 · 2.0 · 1.6
VMM: more work on improving the emulation of certain MSR registers on certain host CPUs (e.g. bugs #12734, #12736, #12744, #12748, #12686, #12770)
VMM: fixed single-stepping for real-mode guests (VT-x without unrestricted guest execution) and some I/O instructions (bug #12636)
VMM: fixed a potential problem with COW pages if nested paging is not available
GUI: Mac OS X: experimental native full screen support for Mountain Lion and Mavericks (bug #12292)
GUI: Mac OS X: removed the mini-toolbar minimize button which doesn't work under Mac OS X full screen mode anyway
GUI: experimental HID LEDs synchronization for Windows and Mac OS X hosts: fixed keyboard re-synchronization if the feature is disabled (as done by default; bug #12758)
GUI: fixed a potential crash when opening the preferences menu (bug #12862)
OVF: fixed a crash of the VirtualBox Manager when re-starting guest export (bug #12586)
3D support: several fixes
HGCM: fixed a problem with saved states which could cause several guest misbehavior after a VM was started from a saved state
Storage: fixed a bug preventing to compact differential snapshots under certain conditions
VBoxSVC: fixed a segmentation fault on Linux hosts if a very long path exists under /dev (bug #12760)
API: fixed guest misbehavior under certain conditions if a storage medium was attached or removed at VM runtime
Windows installer: make the --silent parameter work again (bug #12764)
Mac OS X Networking: prevent local traffic (VM-to/from-host) from leaking to wire (bug #12750)
Windows Additions: fixed the environment for guest processes (4.3.8 regression; bug #12782)
Windows Additions/WDDM: fixed divide by zero exception with multiple guest screens under certain conditions
Windows Additions/WDDM: fixed crashes with 2D video acceleration enabled (4.3.8 regression; bug #12745)
Linux Additions: install correctly on Ubuntu guest systems with a /usr/lib64 directory (bug #12513)
X11 Additions: fix for the VBoxClient process not exiting correctly (bug #12348) and consuming too much processor time | 
