VirtualBox 4.3.6 Build 91406 Now Available for Download

Oracle has released VirtualBox 4.3.6 Build 91406 for Windows, Mac, Linux and Solaris. This is a maintenance release of VirtualBox 4.3 which contains a number of stability improvements and performance fixes.

Overview
Oracle VM VirtualBox (aka VirtualBox) is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL).

As of version 4.3, VirtualBox introduces the Extension Pack mechanism which allows Oracle and 3rd parties to deliver additional functionality on top of the standard Open Source product.

Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, 7, Windows 8/8.1), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, and OpenBSD.

What's new in VirtualBox 4.3?
VirtualBox 4.3 introduces a virtual multi-touch user interface, supports the input device features, of the latest platforms such as Windows 8.1, Windows Server 2012 R2 and Mac OS X 10.9 in a virtual environment. More information about VirtualBox 4.3 available here:

Windows 8.1 Virtual Machine

Download VirtualBox 4.3.6 Build 91406
The links in following website correspond to files available for this download. Download the files appropriate for you.

• Download VirtualBox

What's new in VirtualBox 4.3.6 Build 91406?
This update includes the following updates:

• VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT caused by VMCB caching with nested paging on certain AMD CPUs (bug #12451)
• VMM: fixed a Guru Meditation VERR_VMX_UNEXPECTED_INTERRUPTION_EXIT_TYPE while intercepting debug exceptions (VT-x only; bug #12410)
• VMM: fixed a Guru Meditation VERR_SVM_UNEXPECTED_EXIT while intercepting debug register accesses (AMD-V only; bug #12481)
• VMM: fixed a VERR_SSM_STRUCTURE_MAGIC error when trying to load a saved state made with VBox 4.3.6 when VT-x/AMD-V is disabled. Unfortunately, VBox 4.3.6 produced broken saved states for this configuration so you have to discard these states (bug #12414)
• VMM: added a few more MSRs to the whitelist required by certain guests (bug #12245)
• GUI: fixed deleting of inaccessible VMs (4.3 regression, bug #12205)
• GUI: fixed warnings in VM settings / number of guest processors (bug #12480)
• Main: don't automatically enable 64-bit guests on 64-bit hosts if VT-x/AMD-V is not available (bug #12424)
• Main: always expose the DMI memory information to Windows 2012 guests (bug #12017)
• Main: fixed occasional crashes on guest display resolution change (bug #7063)
• Main: fixed reporting back temporary name when calling IGuestSession::DirectoryCreateTemp() (bug #12498)
• API: fix for a hang when launching a GUI VM through the API, which crashes due to GUI unavailability
• Storage: fix for BLKCACHE_IOERR runtime errors under rare circumstances (bug #11030)
• Network: allow to start more than 5 PCNet instances (bug #12426)
• E1000: if the cable was disconnected before the guest initialized the device, the link status was not properly set to 'down' after the initialization completed despite the fact that there was no connection
• 3D support: fixed offset of guest 3D image elements (Mac OS X Retina hosts only; bug #11021)
• Solaris hosts: fixed accessing the host driver from non-global zones (4.3 regression, bug #12271) 

References:
Oracle's Virtualization Blog
Changelog for VirtualBox 4.3