* VMM: properly terminate the VM with an error if the guest is trying to switch to the PAE mode but PAE is disabled in the VM settings
* GUI: switch to native file dialogs (Windows hosts only; bug #5459)
* GUI: don't use native file dialogs on KDE hosts (Linux hosts only; bug #6809)
* 3D support: fixed GL_EXT_texture_sRGB support
* PXE: fixed ZENworks PXE boot regression
* OVF: fixed slower export and larger images under certain circumstances (3.2.6 regression; bug #7073)
* USB: properly signal an interrupt if the port suspend status changes
* USB: respect the remote-only filter
* USB: avoid VM hang when changing the configuration of certain devices (Windows hosts only)
* USB: fix a crash with older Linux kernels and non-ASCII characters in device strings (Linux hosts only; bug #6983)
* PageFusion: fixed conflict with the guest execution feature
* PageFusion: fixed stability issues with a large number of VMs
* PageFusion: fixed host crashes with guest SMP and Win64 guests
* Memory ballooning: fixed problems restoring VMs with pre-allocation enabled
* Bridged networking: fixed performance issue with GRO enabled on bridged device (bug #7059)
* Hostonly networking: fixed performance issue (3.2.6 regression; bug #7081)
* Hard disks: fix auto-reset of immutable disk at VM startup (bug #6832)
* BusLogic: several fixes for Windows NT/2000 and SCO OpenServer guests
* LsiLogic: fixed I/O errors under rare circumstances
* Sharing disks: support for attaching one disk to several VMs without external tools and tricks
* Shared folders: several fixes and performance enhancements for Solaris guests (bugs #4154 and #6512)
* Solaris Installer: added support for remote installations
* Guest Properties API: correctly support enumerating the properties of a running VM with an empty "patterns" field (bug #7171)
* Guest properties: properly delete transient properties on shutdown
* RDP video redirection performance improvements and stability fixes
* Settings: silently fix host audio driver when reading machine XML settings files or OVF written by VirtualBox on a different host OS, for example convert DirectSound to PulseAudio (bug #7209)
* Settings: properly store the NAT network setting in XML settings file version 1.10 and later (bug #6176)
* VBoxManage: handle differencing images with parent UUID correctly in subcommand openmedium disk (bug #6751)
* Web service: enabled HTTP keepalive for much better performance
* Web service: added timestamps to logging output
* Web service: treat 8-bit strings as UTF-8 not ASCII
* X11 Additions: fix for Xorg 6.8 guests (e.g. RHEL4)