I have built another update (kernel-2.6.31.3-1.2.71.xendom0.fc12) at
http://koji.fedoraproject.org/koji/taskinfo?taskID=1739561 and via the
repository
http://fedorapeople.org/~myoung/dom0/ . X seems to be working
much better for me than it has for recent builds (you can actually see
what is going on) though there is a bit of colour corruption.
Michael Young