The only thing I see now is your burning speed. The log says it's burning @ 16x, way too fast for your media. Still has this "NeroVision Can only write at 16x (22,160 KB/s) instead of 8948.4x (12,348,916 KB/s) to current disc" in your log so not a Roxio-Nero symptom. Maybe something to do with Windows Media Center? Have you done a Windows Update?