On all 3 of my forums I now have an index.html located in the root folder. That file has never been there before. On all three, it is owned by www-data (what the user nginx runs as). All three only contain hex code 00000000. All were created on 08/07 at between 21:50hrs to 23:50hrs.
I have noticed that a few other users (new mainly) have had problems with having an index.html present in their installation (probably due to their host setup - but maybe not?).
I've looked and manually ran any CRON jobs that might be the culprit but nothing appears.
What I am trying to figure out is if it is an add-on or something else. Has anyone else noticed this? I've bypassed the problem (first noticed it on my sayapple.com site as all that was displaying was a blank white page) by only allowing index.php via the forums nginx vhost setup.