Log Message:
Update to 4.0.2. From the changelog:

  Fixed a bug in filter_graylist() that was creating infinitely deep \ 
"_none"
    directories.  The special-case conversion code added in 4.0.1 was not
    checking to see if "_none" was a file or a directory and performing the
    conversion every time.  Thanks to Bob Alanis for reporting this one.