Ha sido actualizado a la vesión 4.0.6,  VirtualBox, esta nueva versión cuenta con esta gran lista de cambios y aquí la ponemos así como sus enlaces para descarga:

Descarga:

• Ubuntu 11.04 ("Natty Narwhal") i386 | AMD64
• Ubuntu 10.10 ("Maverick Meerkat") i386 | AMD64
• Ubuntu 10.04 LTS ("Lucid Lynx") i386 | AMD64
• Ubuntu 9.10 ("Karmic Koala") i386 | AMD64
• Ubuntu 8.04 LTS ("Hardy Heron") i386 | AMD64
• Debian 6.0 ("Squeeze") i386 | AMD64
• Debian 5.0 ("Lenny") i386 | AMD64
• openSUSE 11.4 i386 | AMD64
• openSUSE 11.3 i386 | AMD64
• openSUSE 11.1 / 11.2 i386 | AMD64
• SUSE Linux Enterprise Server 11 (SLES11) i386 | AMD64
• SUSE Linux Enterprise Server 10 (SLES10) i386 | AMD64
• Fedora 14 ("Laughlin") i386 | AMD64
• Fedora 13 ("Goddard") i386 | AMD64
• Mandriva 2010.0 / 2010.1 i386 | AMD64
• Mandriva 2009.1 i386 | AMD64
• Red Hat Enterprise Linux 6 ("RHEL6") / Oracle Linux 6 ("OL6") i386 | AMD64
• Red Hat Enterprise Linux 5 ("RHEL5") / Oracle Linux 5 ("OL5") / CentOS 5 i386 | AMD64
• Red Hat Enterprise Linux 4 ("RHEL4") / Oracle Linux 4 ("OL4") / CentOS 4 i386
• Turbolinux 11 i386 | AMD64
• All distributions i386 | AMD64

Lista de Cambios:

• VMM: fixed incorrect handling of ballooned pages when restoring a VMM from a saved state
• VMM: don’t crash on hosts with more than 64 cores / hyperthreads; implemented support for up to 256 host cores
• VMM: fixed guru meditation for PAE guests running on hosts without PAE
• VMM: fixed slow Linux guests with raw mode and recent guest kernels
• GUI: support host key combinations
• GUI: fixed progress indicator
• GUI: show the mouse pointer while the VM is paused if the USB tablet mouse emulation is used
• GUI: adapt the snapshot folder as well when renaming a VM
• GUI: persistently remember the last folders of the disk/DVD/floppy selectors
• GUI: never allow to start a VM with USB-2.0 activated if the proper extension pack is missing
• GUI: fixed hang/crash when opening a file dialog in an non-existing folder
• Snapshots: fixed a bug which could lose entries in the media registry when restoring a snapshot
• Snapshots: allow snapshots to be stored in the VM directory
• 3D support: fixed a crash if a VM was forced to terminate
• Storage: fixed memory leak
• Storage: fixed access to iSCSI targets over internal network
• Storage: fixed reading from disks with more than one snapshot for VHD and VMDK images with disabled host cache
• Storage: fixed a possible hang during VM suspend after an I/O error occurred
• Storage: fixed a possible hang during VM suspend / reset
• Storage: automatically create a diff image when attaching a streamOptimized VMDK image to a VM
• ATA/SATA: fixed automounting of virtual CD/DVD mediums with recent Linux distributions by correctly reporting the current profile as ‘none’ if no medium is present
• Buslogic: fixed emulation for certain guests (e.g. jRockit VE)
• Host-Only Networking: fixed interface creation failure on Windows hosts
• Host-Only & Bridged & Internal Networking: fix for processing promiscuous mode requests by VMs, defaulting to switch behaviour
• Host-Only Networking: fixed connectivity issue after resuming the host from sleep
• Bridged Networking: support for interface bonding on Mac OS X hosts
• NAT: fixed processing of ARP announcements for guests with static assigned IPs
• VRDP: backward compatibility with VRDPAuth external authentication library
• Shared Folders: don’t fail to start a VM if a path is not absolute, for example when importing an OVF from a different host
• Audio: fixed crash under certain conditions
• USB: fixed a crash when plugging certain USB devices
• HPET: fixed time jumps when reading the counter
• OVF/OVA: automatically adjust disk paths if the VM name is changed on import
• OVF/OVA: fix export to slow medias
• OVF/OVA: automatically repair inconsistent appliances with multiple disks
• rdesktop-vrdp: fixed an assertion triggered under certain conditions
• Windows hosts: fixed occasional hangs during VM shutdown because sometimes COM was not properly uninitialized
• Mac OS X hosts: prevent the mouse from leaving the VM window while captured
• Mac OS X hosts: keep aspect ratio while resizing in scale mode (shift for old behaviour)
• X11 hosts: fixed Yen key support
• X11 hosts: fixed a regression which caused Host+F1 to pop up help instead of sending Ctrl+Alt+F1
• Linux hosts / Linux Additions: mangle IPRT symbols to allow installing VirtualBox inside a VM while the Guest Additions are active
• Linux hosts / Linux guests: workaround for a bug in GLIBC older than version 1.11 leading to crashes under certain conditions (signed/unsigned problem with memchr on 64-bit machines)
• Solaris hosts: fixed a deadlock in event semaphores that could lead to unkillable VM processes
• Windows Additions: fixed Sysprep parameter handling
• Windows Additions: fixed spontaneous guest reboots under certain circumstances
• Windows Additions: added auto logon support for locked workstations on legacy Windows versions
• Windows Additions: fixed driver bugcheck error when handling PnP messages
• Windows Additions: fixed memory leak in VBoxVideo
• X11 Additions: added support for X.Org Server 1.10 final
• Linux Additions: Linux kernel 2.6.39-rc1 fixes
• Linux Additions: improved auto-run support
• Linux Additions: fix mouse support on SUSE 11 SP 1 guest
• Solaris Additions: added support for X.Org Server 1.9
• Guest Additions: various bugfixes for guest control execution
• Webservice: use own log file, with log rotation to limit size