VirtualBox 5.0 RC1 发布，开源虚拟机
VirtualBox 5.0 RC1 发布了，5.0 是一个全新的主要版本，与 Beta4 版本比较，RC1 主要改进内容包括：
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GUI: NLS fixes. NLS strings are now frozen.
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GUI: Improved HiDPI support for Windows host, icons/size-hint adjustments.
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GUI: Use fast scaling mechanism for integer scale-factors (s. a. here).
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Separate UI/VM: fixed completely broken re-attaching to a headless VM.
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Drag and drop: fixed hang when reporting host errors such as inaccessible (locked) files.
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PCNet: OpenStep fix (bug #10545)
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Host-only networking: an attempt to fix some VERR_SUPDRV_COMPONENT_NOT_FOUND problems
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NAT: Don't forcibly reset/drop all connections when link goes down
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AHCI: fixed a possible hand during VM shutdown
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Audio: fix audio output if the default output device changes, before this fix it would always stream to the output device being the default when the VM was started
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VBoxSVC: don't keep the support driver permanently open
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VBoxManage addencpassword: read the command line from the console or from a file
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vbox-img: added resize command
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X11 Additions: fix for X.org servers with RandR 1.1