VirtualBox v4.2 is released. VirtualBox is a general-purpose full virtualizer for x86/x64 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.

VirtualBox v4.2 Changelog:
Here is an incomplete list of fixes since VirtualBox 4.1 RC4:
- 3D: don't show a flashing window on VM creation
- EFI: fixed booting of 64-bit guests with nested paging disabled (RC1 regression)
- Guest Control: minor fixes
- Max OS X hosts: fixed VERR_NO_MEMORY when loading VMMR0.r0 (4.1.16 regression, only relevant for - Snow Leopard, bug 10631
- Mac OS X hosts: fixed installer picture
- Linux hosts: fixed compilation against Linux 3.6 with CONFIG_IOMMU_API disabled
- Linux installer: force umask 022 during the installation (generic installer only)
- X11 Additions: cleanup of X.org header dependencies

Download: VirtualBox v4.2
Source: Here