VirtualBox 3.1.6 [more=changelog] Linux hosts: fixed timing issue on hosts with Linux kernels 2.6.31 or later with certain CPUs (asynchronous timer mode; bug
#6250)
Linux hosts: properly handle host suspend/resume events on Linux kernels 2.6.30 or later (bug
#5562)
Mac OS X hosts: fixed VBoxSVC crash while enumerating the host network interfaces under certain circumstances
Snapshots: fixed image corruption after snapshot merge under certain circumstances (bug
#6023)
Snapshots: fixed crash with VBoxHeadless / OSE
VMM: fixed reference counting guru meditation (bug
#4940)
VMM: improved guest SMP stability
VMM: fixed VT-x hardware debug issues (bugs
#477 &
#5792)
VMM: fixed PGMDynMapHCPage guru meditation (Mac OS X; VT-x only; bug
#6095)
VMM: fixed pgmPoolTrackFlushGCPhysPTInt guru meditations (Mac OS X; VT-x only; bugs
#6095 &
#6125)
VMM: Fixed host crash when running PAE guests in VT-X mode (Mac OS X only; bug
#5771).
GUI: fix displaying of error message (bug
#4345)
GUI: fix inability to enter seamless mode (bugs
#6185,
#6188)
3D support: fixed assertion and flickering when guest application uses several windows with a single OpenGL context (bug
#4598)
3D support: fixed host crashes when using GL_EXT_compiled_vertex_array and array element calls (bug
#6165)
3D support: fixed runtime linker errors with OpenGL guest libs (bug
#5297)
3D support: fixed OpenGL extension viewer crash on startup (bug
#4962)
NAT: fixed a 3.1.4 regression on Windows hosts where graceful connection termination was broken (bug
#6237)
NAT: alternative network setting was not stored persistent (bug
#6176)
NAT: fixed memory corruption during ICMP traffic under certain circumstances
Network: allow to switch the host interface or the internal network while a VM is running (bug
#5781)
VHD: fix for images with a block size different than 2MB
USB: fixed filtered device attach regression (bug
#6251)
USB: fixed crash in OHCI under rare circumstances (bug
#3571)
VRDP: fixed hang under rare circumstances when attaching USB devices
ACPI: prevent guest freezes when accessing /proc/acpi for determining the state of the host battery and the AC adapter (Linux hosts only; bug
#2836)
PulseAudio: fixed guest freezes under certain conditions (3.1.4 regression; bug
#6224)
BIOS: increased space for DMI strings
BIOS: fixed interrupt routing problem for certain configurations (I/O-APIC enabled, ACPI not used; bug
#6098)
iSCSI: be more robust when handling the INQUIRY response
iSCSI: be more robust when handling sense data
BusLogic: fixed FreeBSD guests
webservice: vboxwebsrv is now multithreaded
Solaris Installer: fixed netmask to stay persistent across reboots for Host-only interface (bug
#4590)
Linux installer: removed external dependency to libpng12.so (bug
#6243)
Solaris Additions: fixed superfluous kernel logging (bug
#6181)
Linux Additions: fixed hang when starting the X server in Fedora12 guests and in guests with Linux 2.6.33 or later (bug
#6198)
Linux Additions: support Mandriva speedboot runlevel (bug
#5484)
Linux Additions: fixed SELinux security context of mount.vboxsf (bug
#6362)
Linux Additions: support Ubuntu 10.04 (bug
#5737)
Web service: update PHP bindings to fix problems with enums and collections[/more]
VirtualBox 3.1.6 for Windows hosts (x86/amd64) VirtualBox 3.1.6 / all downloads
Спасибо. 
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