VirtualBox 4.0.10 has been released and is now available for download. You can get binaries for Windows, OS X (Intel Mac), Linux and Solaris hosts at
http://www.virtualbox.org/wiki/Downloads

The full changelog can be found here. The high points for the 4.0.10 maintenance release include ....

GUI: fixed disappearing settings widgets on KDE hosts (bug #6809)

Storage: fixed hang under rare circumstances with flat VMDK images

Storage: a saved VM could not be restored under certain circumstances after the host kernel was updated

Storage: refuse to create a medium with an invalid variant

Snapshots: none of the hard disk attachments must be attached to another VM in normal mode when creating a snapshot

USB: fixed occasional VM hangs with SMP guests

USB: proper device detection on RHEL/OEL/CentOS 5 guests

ACPI: force the ACPI timer to return monotonic values for improve behavior with SMP Linux guests

RDP: fixed screen corruption under rare circumstances

rdesktop-vrdp: updated to version 1.7.0

OVF: under rare circumstances some data at the end of a VMDK file was not written during export

Mac OS X hosts: Lion fixes

Mac OS X hosts: GNOME 3 fix

Linux hosts: fixed VT-x detection on Linux 3.0 hosts

Linux hosts: fixed Python 2.7 bindings in the universal Linux binaries

Windows hosts: fixed leak of thread and process handles

Windows Additions: fixed bug when determining the extended version of the Guest Additions

Solaris Additions: fixed installation to 64-bit Solaris 10u9 guests

Linux Additions: RHEL6.1/OL6.1 compile fix

Linux Additions: fixed a memory leak during VBoxManage guestcontrol execute

Technocrati Tags: Sun Virtualization VirtualBox