Just had a weird message in the bottom left hand corner of my browser about downloading from an unrelated URL. I hadn't clicked on anything. I looked up the domain and it was just registered on 5/24 so I submitted an email to their ISP questioning the legitimacy of the site. I'm not waiting to see what happens, just restoring from a good system backup. Will let you know if I see it again or learn more.
Edited because I was posting from my iPhone!
Edited again because this could be just an image that was downloading, but something about the message and the URL name seemed odd - and the registration date of the site bothers me a bit. Hope it's just me being overzealous.