Comment 7 for bug 531823

Ok, so it seems that there is one change which seems responsible for this:

   KVM: fix memory access during x86 emulation.

Though I cannot be completely sure this is the only thing causing problems (my system here is too erratic with gfx) I have placed some kernels without this at http://people.canonical.com/~/smb/bug531823. Maybe someone else can confirm whether this solves the problem. Thanks.