I've been a happy drupal administrator for some months now, fooling around on a 4.7 installation with additional modules like Image, Video, Audio, Embed Filter, Tagadelic, Views, the Vote Up/Down Package and Flag Content. It all went smooth until recently, when things started happening by themselves in an eerie poltergeist way.
For instance, after successfully installing flag_content, I started getting messages that 'admin' (that is me) had flagged content. Which I had not, even though I had been logged in at the time. The log suggested that it was me half of the time, and half of the time my brother's account, who is NOT admin. Nobody else had touched our computers.
Then a primary menu item vanished by itself. Spooky, as it takes 3-4 clicks in sequence to do that. And then, 5 days later, the localization menu item in navigation vanished. This last happening was especially irritating, as I don't know how to get it back without showing it to everyone.
And then yesterday, a primary menu item was deactivated after I had renamed the path of another primary menu item. I activated it again, and changed its path (as I had edited a bit in the URL aliases)... and then a THIRD primary menu item was deactivated. Unfortunately, I cannot replicate this error any longer, by messing around with the paths.
I've tried searching through the log for reasons, but the only real warnings concern some 'duplicate entries', which I've discussed with frjo of the vote_up_down package here: http://drupal.org/node/85251