The past week, a bunch of random pictures kept getting posted into my dropbox. Even in my private un-shared folders. The weird thing is that it says it was uploaded by a user that I have a different shared folder with, but he swears he doesn't even know where the images came from. We deleted the images today and opened my dropbox a few minutes later to see the picture was uploaded 3 more times, all at times where i wasnt on my dropbox and neither was the person who i have a seperate shared folder with. There seems to he some sort of security failure or bug...