Are those logs from right after the crash? (Xorg only keeps them for one reboot) They don't appear to record one.
Does your screen go blank when the system freezes? If it does, then flashes between off and black with a "busy" mouse pointer several times, that's probably bug 120834.
Are those logs from right after the crash? (Xorg only keeps them for one reboot) They don't appear to record one.
Does your screen go blank when the system freezes? If it does, then flashes between off and black with a "busy" mouse pointer several times, that's probably bug 120834.