Quoting Michael Paoli (Michael.Paoli@cal.berkeley.edu):
Okay, fixed[1]. I'll dig[2] into it later to investigate how issue did or likely occurred.
Thanks Rick for catching that!
Logcheck is my kung-fu.
It's one of several similar utilities that report _unusual_ activity in system logfiles. Deciding what is unusual is up to you, which is to say you iteratively tweak the 'ignore' rulesets to cease telling you about system events you've decided aren't worth being told about.
So, you end up occasionally getting a mail telling you about deemed-significant 'System Events' logfile entries. One of these alerted me to the glitch.