Quote - See I am still worried because I was just browsing and made no attempt to download anything at all. Just went from page to page and looked at the thumbnails. So this could not have come from a specific server I tried to access. Is this what they call fishing? I don't know. Never happened before.

As the thumbnails are hosted offsite, so the prompt would have popped up when trying to get one of the thumbnails on the page you were looking at (for the same reasons mentioned earlier).