/var/log/messages and /var/log/kern.log are similar. The excerpt above as actually from this morning but I had the exact same thing just at the end of the logs....
total wasted disk space: 3GB -- i915 driver flooded syslog https://launchpad.net/bugs/65228 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs