VirtualBox v1.5.6  [more=Changelog] 
 - GUI: ?xed several error messages 
 - GUI: ?xed registration dialog crashes once and for all 
 - GUI: really ask before resetting the VM 
 - GUI: release mouse and keyboard before the host activates the screensaver 
 - GUI: ?xed issue with license display on big screens 
 - GUI: added setting for network name for internal networks 
 - GUI: added setting for network device type 
 - GUI: keyboard ?xes 
 - GUI: seamless mode and fullscreen mode ?xes 
 - GUI: ?xed soaked hostkey keyup event under certain conditions 
 - GUI: more informative message dialog buttons 
 - GUI: VM selector context menu 
 - VBoxSDL: added -termacpi switch 
 - VBoxSDL: ?xed automatic adaption of the guest screen resolution to the size of the VM window 
 - VMM: under heavy guest activity, for example when copying ?les to/from a shared folder, the VM could crash with an assertion 
 - VMM: added an option to select PIIX4 (improves compatibility with Windows guests created by VMware) 
 - VMM: ?xed a bug which could lead to memory corruption under rare circumstances 
 - VMM: improved performance of Solaris guests 
 - VRDP: ?xed a 1.5.4 regression: VRDP client and server were out-of-sync if the VM was started using the GUI 
 - VRDP: proper error handling if the VRDP library could not be loaded 
 - VBoxManage: ?xed crash during clonevdi 
 - VBoxManage: added list runningvms command 
 - VBoxManage: improved the compatibility when reading the partition table of a raw disk 
 - Shared Folders: added support for read-only shared folders 
 - Shared Clipboard: several ?xes 
 - Network: experimental support for E1000 device emulation 
 - iSCSI: better check for miscon?gured targets 
 - iSCSI: allow to directly attach to internal networks with integrated mini IP stack 
 - PulseAudio: dont hang during VM initialization if no sound server is available 
 - VDI: ?xed sized virtual disk images are now completely written during creation to workaround buggy sparse ?le handling on some OS (e.g. Vista) 
 - VDI/VMDK: prevent indexing of .vdi and .vmdk ?les on Windows hosts 
 - RDP: ?xed compilation of the Linux rdesktop client on newer Linux kernels 
 - RDP: install rdesktop-vrdp on Linux hosts 
 - ACPI: added sleep button event 
 - Serial: proper handling of inaccessible host devices 
 - Windows installer: allow smooth upgrade without deinstallation 
 - Linux installer: ?xed Slackware detection regression 
 - Linux installer: updated VBoxTunctl allowing to assign a tap device to a group on Linux kernels > 2.6.23 
 - Windows additions: several ?xes, in particular for Windows NT4 
 - Linux additions: ?xed installer for Kubuntu 8.04 
 - Linux additions: add default video mode for handling video mode hints from the host 
 - Linux host: compatibility ?xes with Linux > 2.6.24[/more]   
 Download  
http://www.virtualbox.org/wiki/Downloads  32-bit: 
http://195.34.175.98/download/1.5.6/VirtualBox_1.5.6_Win_x86.msi  64-bit: 
http://195.34.175.98/download/1.5.6/VirtualBox_1.5.6_Win_amd64.msi