VirtualBox 3.1.4 has been released and is now available for download. You can get binaries for Windows, OS X (Intel Mac), Linux and Solaris hosts at

Version 3.1.4 is a maintenance release and contains the following updates and fixes.
  • SMP stability fixes
  • activate NXE for PAE enabled guests (VT-x and AMD-V on 32 bits hosts only)
  • turn on nested paging by default for new VMs (if available; VT-x and AMD-V only)
  • turn on VPID by default for new VMs (if available; VT-x only)
  • perform strict CPUID compatibility checks when teleporting; to get the old behavior set "VBoxInternal/CPUM/StrictCpuIdChecks" to 0
  • VBoxManage: add restorecurrent operation to snapshots command
  • fixed status LEDs for storage devices
  • workaround for disabling the seamless mode on KDE hosts (KWin bug)
  • disable seamless mode when guest changes screen resolution
  • really fixed host DVD loading "passthrough" setting from config file
  • Solaris hosts: several USB fixes (including support for Apple iPod)
  • Solaris installer: fixed USB module removal and Solaris 10 "id" binary incompatibilityXFree86 Additions: accept video mode hints for the initial mode again

You can also see a complete list of bugs fixed in this new release.

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Sun Virtualization VirtualBox