fedora 18 can't boot after update to kernel 3.7.X

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http://forums.fedoraforum.org – I got a Blurred screen after plymouth screen when X is starting on kernel 3.7.X, but kernel 3.6.X works fine. my videocard is nv40 and driver is nouveau, and I tried weston-launch , it can work. how can i resolve this issue??? (HowTos)