Reading a resource when L5 disappeared followed by an Apple Crash Report. It was a rather simple layout. Had recently created a new highlight style and edited the note that accompanied it. Returned to reading, and about a minute later the crash occurred.
2248.Apple Crash Report.rtf
0602.LogosLogs Jack Caviness 20121229-092308.gz
Have experienced a few random crashes without documenting them, but will start posting logs with most crashes in the interest of fixing the causes.