I buyed the same mb for realize a small HTPC, but I have success for the moment only with Windows 7 (32bit edition).
On this platform all run perfectly (excluse pci-e tv tuner).
XBMC version 11 or beta 12 is exceptional, no one problem. Running Full HD 1920x1080 H264 video
without drop frame and at max CPU usage 15%.
Hope in future that on Linux we do the same...
but by now I believe only in bananas developer, they make good choice better than Intel can do.
I forgot to tell that can use the guide on reply on this site to obtain some good result on Ubuntu 12.04 not Mythbuntu that you choose instead.
Thanks Massimo for your response. One question though (I'm struggling a bit with your English )
Are you saying you've tried it with Ubuntu and got it to work?
Sorry but I'm not English and write in English that remember from school.
I try Ubuntu 12.04 with drivers from sarvatt repository but no luck with XBMC.
( I think that you are interesting obtain result with XBMC. )
Oh no that's not what I wanted to hear. So the only OS you've been able to use is win7?
Unfortunately at the moment only Win7 32 bit, I obtain excellent result with XBMC.
Hope in the future others system can do the same.