In short : Running 2.6.18-1.2798.fc6xen (I've also tried many older
versions ) the system starts up and is usable in multiuser mode. However
under init 5 (X) screen corruption occurs and the system locks.
The messages dump looks very similar so I'm re-opening :
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207432
Anybody else see this?