從Changelog可以看出是重大改版, 個人覺得最重要的是SATA相容性的改善。

VirtualBox Homepage: http://www.virtualbox.org/
Download Page: http://www.virtualbox.org/wiki/Downloads
Changelog: http://www.virtualbox.org/wiki/Changelog

This version is a major update. The following major new features were added:

   
• 64 bits guest support (64 bits host only)
     
• New native Leopard user interface on Mac OS X hosts
     
• The GUI was converted from Qt3 to Qt4 with many visual improvements
     
• New-version notifier
     
• Guest property information interface
     
• Host Interface Networking on Mac OS X hosts
     
• New Host Interface Networking on Solaris hosts
     
• Support for Nested Paging on modern AMD CPUs (major performance gain)
     
• Framework for collecting performance and resource usage data (metrics)
     
• Added SATA asynchronous IO (NCQ: Native Command Queuing) when accessing raw disks/partitions (major performance gain)
     
• Clipboard integration for OS/2 Guests
     
• Created separate SDK component featuring a new Python programming interface on Linux and Solaris hosts
     
• Support for VHD disk images

In addition, the following items were fixed and/or added:

   
• VMM: VT-x fixes
     
• AHCI/SATA: improved performance
     
• GUI: keyboard fixes
     
• Linux installer: properly uninstall the package even if unregistering the DKMS module fails
     
• Linux additions: the guest screen resolution is properly restored
     
• Network: added support for jumbo frames (> 1536 bytes)
     
• Shared Folders: fixed guest crash with Windows Media Player 11
     
• Mac OS X: Ctrl+Left mouse click doesn’t simulate a right mouse click in the guest anymore. Use Hostkey+Left for a right mouse click emulation. (bug #1766):)
  

[ 本帖最後由 mlcnxewlkia 於 2008-9-7 23:38 編輯 ]

http://www.virtualbox.org/
VirtualBox 2.0.4 (released 2008-10-24)

This is a maintenance release. The following items were fixed and/or added:

    * VMM: better error reporting for VT-x failures
    * VMM: don’t overflow the release log with PATM messages (bug #1775)
    * VMM: fixed save state restore in real mode (software virtualization only)
    * GUI: work around a Qt bug on Mac OS X (bug #2321)
    * GUI: properly install the Qt4 accessible plugin (bug #629)
    * SATA: error message when starting a VM with a VMDK connected to a SATA port (bug #2182)
    * SATA: fixed Guru mediation when booting OpenSolaris/64; most likely applies to other guests as well (bug #2292)
    * Network: don’t crash when changing the adapter link state if no host driver is attached (bug #2333)
    * VHD: fixed bug which prevents booting from VHD images bigger than 4GB (bug #2085)
    * VRDP: fixed a repaint problem when the guest resolution was not equal to the client resolution
    * Clipboard: don’t crash when host service initialization takes longer than expected (Linux hosts only; bug #2001)
    * Windows hosts: VBoxSVC.exe crash (bug #2212)
    * Windows hosts: VBoxSVC.exe memory leak due to a Windows WMI memory leak (Vista only) (bug #2242)
    * Windows hosts: VBoxSVC.exe delays GUI startup
    * Linux hosts: handle jiffies counter overflow (VM stuck after 300 seconds of host uptime; bug #2247)
    * Solaris hosts: fixed host or guest side networking going stale while using host interface networking (bug #2474)
    * Solaris hosts: added support for using unplumbed network interfaces and Crossbow Virtual Network Interfaces (VNICs) with host interface networking
    * Solaris hosts: reworked threading model improves performance for host interface networking
    * Windows additions: fixed crash when accessing deep directory structures in a shared folder
    * Windows additions: improved shared folder name resolving (bug #1728)
    * Windows additions: fixed Windows 2000 shutdown crash (bug #2254)
    * Windows additions: fixed error code for MoveFile() if the target exists (bug #2350)
    * Linux additions: fixed seek() for files bigger than 2GB (bug #2379)
    * Linux additions: support Ubuntu 8.10
    * Linux additions: clipboard fixes (bug #2015)
    * Web services: improved documentation and fixed example (bug #1642)