New feature
I've added a user-configurable check interval. You can adjust it anywhere from 1 to 24 hours.
Bug fix
ADPassMon is designed to poll AD for password expiration info immediately upon launch, 15 seconds after the computer wakes from sleep, and/or every x hours (determined by the check interval). Blog commenter Andy May let me know that the automatic expiration check was not working properly. This release fixes that bug.