I've received a CubieBoard (from Miniand) and I've created a custom firmware image for it.
This is aimed at embedded uses, and so is a fairly minimal server install. It's currently based on Linaro 13.01, which is based on ubuntu Server.
I've stripped it back to a minimal setup that boots up and DHCPs off the ethernet port with an ssh server running. There's a console provided on serial and via the HDMI port.
The kernel is based on the sunxi-3.4 branch, with loads of networking, wireless, and usb device support, and I'm working on the GPIO and SPI interfaces currently.
I'll also add 3D accelerated framebuffer support soon.
If you're interested, follow this forum post where I'll be discussing it and providing updates:
Note that I'm pretty sure this image should work on the Hackberry A10 and similar devices as well, with minimal effort.