I think our case "might" be following your theory Balcarras.  We have a rather large deployment of Meraki access points of over 4000 access point in around 400 buildings.  These include various models of Meraki access points and various firmware versions.  Most are on either Meraki or Cisco Catalyst switches.  We recently started having this message appear at a number of our sites on some of the access points.  I have had our team validate two buildings so far where this message suddenly appeared on some of our WAPs.  In these particular cases they were MR46 and CW 9166 models.  In both of these buildings it turns out the cabling did indeed have issues that were serving the access points that were reporting.  Cable tests from switches showed issues and were then confirmed onsite with a NetAlly device. Our techs re-punched cables and the WAPs came back and checked in at top speeds.  In our case so far it seems to be bringing light to an issue we had not recognized that we had on some of our cabling.  I'm also wondering if this is something that Meraki recently changed/fixed in its alerting.  I will update if I see any deviation from this. ... View more