VirtualBox v3.1.4 Beta 2 is released.VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.

VirtualBox v3.1.4 Beta 2 Changelog:
* VMM: fixed incompatibility with 2.6.32 Linux kernels (software virtualization only)
* VMM: activate NXE for PAE enabled guests (VT-x and AMD-V on 32 bits hosts only; bug #3578) -- fixed 32 bits VT-x regression on hosts with EFER.NXE=0
* VMM: fixed hang of SMP guests under certain circumstances
* Snapshots: fix a 3.1 regression that broke deletion of snapshots when a machine had immutable or writethrough storage attached (bug #5727)
* GUI: fixed guest fullscreen mode after reboot (bug #5372)
* VRDP: fixed crash on Mac OS X when 3D is enabled (3.1 regression)
* 3D support: fixed ubigraph_server crashes (bug #4674)
* 3D support: fixes for 64-bit Solaris guests
* Linux Additions: fixed shared folders for Linux 2.6.32 guests (bug #5891) -- fix improved.

Download: VirtualBox v3.1.4 Beta 2
Source:Here