Piping in to say I had a similar issue. I was getting notifications for an alert every 18-21 hours, three at time with about 6 minutes between each - none of them during business hours. It's notable that I would get the email alerts and in-browser alerts, but these instances were not listed in the Alerts inbox. I tried turning the alert off and back on to no avail. I opened a case with care - it's still open and has gone silent, but the issue seems to have resolved itself.
------------------------------
Emily Kammerer
Ascendium Education Solutions, Inc.
------------------------------