The single and double *s are folder names (removed and replaced with *s). I was editing a page when I noticed that when I tried to preview it, the page went into a continual load. Then the whole site went into a continual load.
Probably unrelated, but when I checked my base ftp directory (to make sure the whole site wasn't just down), I noticed two new files:
ss_blank.php (which simply had a php call to echo "200") and ss_(random characters)_(more random characters)_import.php. I tried a Google search and found pretty much nothing on the matter. Nothing on these forums, either.
However, most of the returned results were "/index of/" on machines that were hosted by Bluehost. Is this a background feature of theirs that I'm being overly paranoid about or is it something worse?