VirtualBox 4.2.4 发布了，主要改进内容包括：
- GUI: fixed validation warning on global settings / proxy page (4.2.2 regression, bug #11089)
- GUI: fixed crash with multiple guest screens on certain conditions (OS X hosts only)
- VBoxBalloonCtrl: fixed command line argument handling of ballooning module
- VRDP: fixed occasional crash during a video playback in the guest (bug #11082)
- BIOS: fixed broken DMI information (4.2 regression)
- BIOS: workaround for booting from Windows 2000 floppy disks
- EFI: fixed video mode selection loss on VM reboot (#10983)
- Parallel: fixed parallel port printing failure/ paper queue empty error (Windows hosts only; bug #2226)
- NAT: fixed crash on alias-less DNS responses when host-resolver is used
- Storage: fixed hang under rare circumstances
下载地址：VirtualBox 4.2.4