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One week after the first beta, VirtualBox released a second beta version of 3.0 which comes with numerous bux fixes, improved performances and fixes for SMP guests.

Changes since VirtualBox 3.0 Beta 1:
  • High CPU usage with certain idle Windows guests (e.g. XP SP2)
  • Performance improvements for SMP guests
  • Reset issues with SMP guests
  • Windows 7 x64 boot problems with SMP
  • Windows 7 shutdown hangs with SMP
  • Hanging VM when unmounting an ISO with SMP guests
  • Several OpenGL & Direct3D related fixes

More details about the release can be found in the forum release announcement. VirtualBox 3.0 Beta 2 is available to download for Windows, Mac OS X, Linux, Solaris and OpenSolaris and is released under the GNU General Public License version 2 (GPLv2).