Akeeba Backup and Akeeba Admin both constantly deactivate on their own approximately once a month. I have to use the plugin manager and activate them manually. We are using Akeeba Panopticon to manage all of our WP sites and most Joomla sites. It appears that when Akeeba backup or Admin tools are updated that this is when they are deactivated. I cannot be sure of this, but when I get a message that a backup is out of date from Panopticon, I log into a site and Akeeba Backup is always deactivated in the plugin manager. This happens on all six of our Wordpress sites and is consistent. While the message about an out of date backup is somewhat concerning, I get very worried when Akeeba Admin is deactivated.
No other plugins on these sites deactivate on their own, only the Akeeba products.
Bruce Wilson Formations Design Group, LLC Vancouver, WA USA