Oracle heeft versie 4.3.12 van VirtualBox uitgebracht. VirtualBox kan worden gebruikt om andere besturingssystemen in een virtuele omgeving op een computer te installeren. Op die manier is het mogelijk om verschillende besturingssystemen op dezelfde hardware naast elkaar en tegelijkertijd te gebruiken. VirtualBox is beschikbaar voor Windows XP en hoger, OS X, Linux en Solaris, en is in staat om een groot aantal gastbesturingssystemen te draaien.
In versie 4.3 van VirtualBox is onder meer de complete virtualisatiecode herschreven, wat diverse problemen heeft verholpen en ook diverse prestatieverbeteringen laat zien. Verder zijn er videocapturing en ondersteuning voor ipv6, kunnen diverse virtuele machines die op dezelfde computer draaien nu via het interne netwerk met elkaar communiceren en is er ondersteuning voor multitouchschermen. Deze zesde update bevat verder nog de volgende verbeteringen:
The following items were fixed and/or added:
- VMM: fixed an occasional Guru Meditation (Mac OS X hosts only; bugs #12727, #12954)
- VMM: fixed a rare condition that would fail to invalidate guest TLB entries or would invalidate them when not required (Windows hosts only)
- VMM: fixed a VERR_NOT_SUPPORTED Guru Meditation seen with certain guests, e.g. OpenServer 5.0.7
- VMM: more fixes for MSR emulation on certain hardware (tickets #12240, #12875)
- GUI: fixed mouse positioning with mouse integration disabled and multiple guest screens (Windows hosts only; bug #9059)
- GUI: fixed crash in VM manager (bug #12878)
- GUI: fixed crash under rare conditions on entering/exiting fullscreen/seamless mode
- Shared Clipboard: don't stop working after taking a snapshot (bug #12700)
- AHCI: fixed a crash under rare circumstances
- API: fixed a hang during VM shutdown under rare conditions
- NAT: fixed generation of malformed ICMP error datagrams (4.3.10 regression)
- NAT: fixed potential crash in DNS proxy
- NAT Network: don't drop port forwarding rules after some time
- NAT: fixed ARP cache corruption and network loss in Windows guest caused by iSCSI service activity
- USB: improved check if a storage device is currently mounted to the host when the device is about to be attached to the VM (Mac OS X hosts only; #11038)
- 3D support: several fixes, including better support for Ubuntu 14.04
- VRDP: fixed a potential crash on client disconnect (bug #12858)
- VBoxSVC: fixed a race when a new client is started a few seconds after the last client terminated (Windows hosts only; bugs #11309, #12509)
- VBoxSVC: fixed VirtualBox.xml registry corruption after VM renaming
- VBoxSVC: fixed a potential crash caused by incorrect USB device filter (Mac OS X hosts only; #11038)
- Windows hosts: partly support 32-bit COM on 64-bit systems
- Windows host installer: implemented merge module (msm) support
- Linux hosts: fixed dependency of boot script on older Debian systems (bug #12262)
- Linux guests: fix symbolic link to shared folder helper (bug #12879)
- Linux Additions: don't crash VBoxService during guest execute for users without a password (bug #12994)
- Linux Additions: fixed a bug in guest execution where the guest process terminated with VERR_INTERRUPTED to the host
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