I had a folder on my desktop that I created a couple months ago and then deleted. However, for some reason it keeps coming back, and I've discovered that it happens whenever I download something. This seems to happen regardless of where I save something or where the pop-up for choosing the download destination automatically opens to. It also seems to be specific to firefox, as this doesn't seem to happen with other browsers.

I should add that it's only the folder itself that comes back. Before I originally deleted it, I emptied its contents and it's only the empty folder that keeps reappearing on my desktop