VirtualBox 4.0.2 Build 69518

What's new in this version:

- GUI: don't crash if a removable host drive referenced from the VM settings vanished
- GUI: fixed a crash when using the KDE4 Oxygen theme and clicked on the settings button
- GUI: properly warn if the machine folder cannot be created
- GUI: several fixes for multimonitor X11 guests
- ExtPack: don’t make the installer helper application suid root (Linux .deb/.rpm packages only)
- ExtPack: improved user experience on Vista / Windows 7 when installing an extension pack
- ExtPack: fixed issue with non-ascii characters in the path name during installing an extension pack
- ExtPack: fixed SELinux issues on 32-bit Linux hosts
- VBoxManage: Host-only interface creation and removal is now supported for all platforms except Solaris
- VBoxManage: fixed segmentation fault when removing non-existent host-only interface
- Storage: fixed possible crashes with VMDK/VHD images with snapshots and async I/O (4.0 regression)
- Storage: don’t eject the physical medium if a DVD/CDROM/?oppy drive is detached from a VM
- Storage: be more robust when a faulty guest sends ATA commands to an ATAPI device
- Parallels: fixed deletion of the image during suspend, pause or power off (4.0 regression)
- Bridged networking: fixed host kernel panic when bridging to devices with no TX queue (4.0 regression; Linux hosts only; )
- NAT: port-forwarding rule registration respects protocol parameter
- E1000: fixed PXE boot issues with WDS
- Virtio-net: fixed the issue with TX performance in some Linux guests
- ICH9: fixed VM crash (software virtualization only;)
- VGA: fixed VESA screen issue (4.0 regression;)
- Shared Folders: fixed parameter parsing when creating symbolic links, fixes 32-bit/64-bit bitness issue
- Main: fixed crash under rare circumstances due to an invalid logging string (4.0 regression)
- Main: improve error information propagation for errors preventing a VM start
- Main: fixed problems with snapshots and non-ASCII characters in machine paths
- Webservice: now listens to localhost by default as documented
- Settings: do not fail loading machine settings if removeable drive attachment (host drive or image) cannot be found; with 4.0 this is much more likely when machines are moved from one host to another
- Settings: fixed issue that changing a snapshot name or description was not saved to machine XML
- OVF/OVA: fixed import of files created by other OVF tools
- rdesktop-vrdp: fix a crash during USB device enumeration
- Linux hosts: fixed a crash during USB device enumeration.
- Linux hosts: try a bit harder to allocate memory ( 4.0 regression)
- Guest Additions: fixed parsing of parameters for guest control in VBoxService (4.0 regression;)
- Windows Guest Additions: automatic logon on Windows Vista/Windows 7 now supports unlocking previously locked workstations