As an admin of the system, I've spent so much time in it that I've exceeded the 5 digit (99,999) maximum value of the "Time Spent" field and it has rolled over, like the odometer of an old car, back to 00,000. This field should add a digit so that it accurately portrays system usage for heavy users. I hit this limit a few months ago after a little over 2 years as LMS admin.
Who needs this: Anyone who is a heavy user of the system; to help accurately represent the full range of the time users spend in the system, and to help provide perspective for ALL types/volumes of system usage.