VirtualBox 2.1.0 Build 41146

What's new in this version:

New features:
- Support for hardware virtualization (VT-x and AMD-V) on Mac OS X hosts.
- Support for 64-bit guests on 32-bit host operating systems (experimental; see user manual, chapter 1.6, 64-bit guests, page 16).
- Added support for Intel Nehalem virtualization enhancements (EPT and VPID; see user manual, chapter 1.2, Software vs. hardware virtualization (VT-x and AMD-V), page 10)).
- Experimental 3D acceleration via OpenGL (see user manual, chapter 4.8, Hardware 3D acceleration (OpenGL), page 66).
- Experimental LsiLogic and BusLogic SCSI controllers (see user manual, chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, page 70).
- Full VMDK/VHD support including snapshots (see user manual, chapter 5.2, Disk image files (VDI, VMDK, VHD), page 72).
- New NAT engine with significantly better performance, reliability and ICMP echo (ping) support (bugs #1046, #2438, #2223, #1247).
- New Host Interface Networking implementations for Windows and Linux hosts with easier setup (replaces TUN/TAP on Linux and manual bridging on Windows) .

Fixes:
- VMM: significant performance improvements for VT-x (real mode execution).
- VMM: support for hardware breakpoints (VT-x and AMD-V only; bug #477).
- VMM: VGA performance improvements for VT-x and AMD-V.
- VMM: Solaris and OpenSolaris guest performance improvements for AMD-V (Barcelona family CPUs only).
- VMM: fixed guru meditation while running the Dr. Web virus scanner (software virtualization only; bug #1439).
- VMM: deactivate VT-x and AMD-V when the host machine goes into suspend mode; reactivate when the host machine resumes (Windows, Mac OS X & Linux hosts; bug #1660).
- VMM: fixed guest hangs when restoring VT-x or AMD-V saved states/snapshots.
- VMM: fixed guru meditation when executing a one byte debug instruction (VT-x only; bug #2617).
- VMM: fixed guru meditation for PAE guests on non-PAE hosts (VT-x).
- VMM: disallow mixing of software and hardware virtualization execution in general (bug #2404).
- VMM: fixed black screen when booting OS/2 1.x (AMD-V only).
- GUI: pause running VMs when the host machine goes into suspend mode (Windows & Mac OS X hosts).
- GUI: resume previously paused VMs when the host machine resumes after suspend (Windows & Mac OS X hosts).
- GUI: save the state of running or paused VMs when the host machine’s battery reaches critical level (Windows hosts).
- GUI: properly restore the position of the selector window when running on the compiz window manager.
- GUI: properly restore the VM in seamless mode (2.0 regression).
- GUI: warn user about non optimal memory settings.
- GUI: structure operating system list according to family and version for improved usability.
- GUI: predefined settings for QNX guests.
- IDE: improved ATAPI passthrough support.
- Networking: added support for up to 8 Ethernet adapters per VM.
- Networking: fixed issue where a VM could lose connectivity after a reboot.
- iSCSI: allow snapshot/diff creation using local VDI file.
- iSCSI: improved interoperability with iSCSI targets.
- Graphics: fixed handling of a guest video memory which is not a power of two (bug #2724).
- VBoxManage: fixed bug which prevented setting up the serial port for direct device access..
- VBoxManage: added support for VMDK and VHD image creation.
- VBoxManage: added support for image conversion (VDI/VMDK/VHD/RAW).
- Solaris hosts: added IPv6 support between host and guest when using host interface networking.
- Mac OS X hosts: added ACPI host power status reporting.
- API: redesigned storage model with better generalization.
- API: allow attaching a hard disk to more than one VM at a time.
- API: added methods to return network configuration information of the host system.
- Shared Folders: performance and stability fixes for Windows guests (Microsoft Office Applications).