Windows 8 Consumer Preview Metro UIIn case you're running Windows 8 Consumer Preview on Oracle VirtualBox 4.1, you'll need to exercise caution in which version of VirtualBox Guest Addtions you run.

Guest Additions work up to version 4.1.8. After that, you take pot luck depending on what virtualised hardware you're running. Users of 4.1.10, 4.1.12 and 4.1.14 are reporting all kinds of grief with the VirtualBox graphics drivers; mostly black screens. In my case, I get a lovely multi-coloured Metro start screen. It has nice blocks of solid colour, sans icons or text. Not exactly Live Tiles, just completely dead ones.

Trying to install any of the later version Guest Additions in Safe mode isn't helping; as soon as it loads up the graphics driver in normal running, we're back to block-rendering which isn't the peak of usability. Read more of this post