VirtualBox 4.2.12 Build 84980 Now Available for Download

VirtualBox 4.2.12 Build 84980 is now available for download. This build is a maintenance release which includes new features, improvements and fixes over the previous release.

Overview
VirtualBox or Oracle VM 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 4.0, 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, Windows 7), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, and OpenBSD.

Download VirtualBox 4.2.12 Build 84980
The links in this section correspond to files available for VirtualBox 4.2.12 Build 84980. Download the files appropriate for you.

New in VirtualBox 4.2.12 Build 84980 (April 12, 2013)
This build includes the following updates:
  • VMM: fixed a Guru Meditation on putting Linux guest CPU online if nested paging is disabled.
  • VMM: invalidate TLB entries even for non-present pages.
  • GUI: Multi-screen support: fixed a crash on visual-mode change.
  • GUI: Multi-screen support: disabled guest-screens should now remain disabled on visual-mode change.
  • GUI: Multi-screen support: handle host/guest screen plugging/unplugging in different visual-modes.
  • GUI: Multi-screen support: seamless mode: fixed a bug when empty seamless screens were represented by fullscreen windows.
  • GUI: Multi-screen support: each machine window in multi-screen configuration should have correct menu-bar now (Mac OS X hosts).
  • GUI: Multi-screen support: machine window View menu should have correct content in seamless/fullscreen mode now (Mac OS X hosts).
  • GUI: VM manager: vertical scroll-bars should be now updated on content/window resize.
  • GUI: VM settings: fixed crash on machine state-change event.
  • GUI: don't show warnings about enabled or disabled mouse integration if the VM was restored from a saved state.
  • Virtio-net: properly announce that the guest has to handle partial TCP checksums (bug #9380).
  • Storage: Fixed incorrect alignment of VDI images causing disk size changes when using snapshots (bug #11597).
  • Audio: fixed broken ALSA & PulseAudio on some Linux hosts due to invalid symbol resolution (bug #11615).
  • PS/2 keyboard: re-apply keyboard repeat delay and rate after a VM was restored from a saved state (bug #10933).
  • BIOS: updated DMI processor information table (type 4): corrected L1 & L2 cache table handles.
  • Timekeeping: fix several issues which can lead to incorrect time, Solaris guests sporadically showed time going briefly back to Jan 1 1970.
  • Main/Metrics: disk metrics are collected properly when software RAID, symbolic links or rootfs are used on Linux hosts.
  • VBoxManage: don't stay paused after a snapshot was created and the VM was running before.
  • VBoxManage: introduced controlvm nicpromisc (bug #11423).
  • VBoxManage: don't crash on controlvm guestmemoryballoon if the VM isn't running (bug #11639).
  • VBoxHeadless: don't filter guest property events as this would affect all clients (bug #11644).
  • Guest control: prevent double CR in the output generated by guest commands and do NLS conversion.
  • Linux hosts / guests: fixed build errors on Linux 3.5 and newer kernels if the CONFIG_UIDGID_STRICT_TYPE_CHECKS config option is enabled (bug #11664).
  • Linux Additions: handle fall-back to VESA driver on RedHat-based guests if vboxvideo cannot be loaded.
  • Linux Additions: RHEL/OEL/CentOS 6.4 compile fix (bug #11586).
  • Linux Additions: Debian Linux kernel 3.2.0-4 (3.2.39) compile fix (bug #11634).
  • Linux Additions: added auto-logon support for Linux guests using LightDM as the display manager.
  • Windows Additions: Support for multimonitor. Dynamic enable/disable of secondary virtual monitors. Support for XPDM/WDDM based guests.
  • X11 Additions: support X.Org Server 1.14 (bug #11609).

Source:
Changelog for VirtualBox 4.2

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