If you click on a file listed in an AOLserver directory listing, you will probably notice that the URL contains a double slash.
Ex: http://jamesthornton.com/somedir//somefile.html
The existence of the double slash will break links/images in somefile.html that use relative paths in the form of ../otherdir/otherfile.html.
To prevent the double slash, I modified the _ns_dirlist proc in <aolserver src>/tcl/fastpath.tcl, changing:
set prefix "${location}${url}/"
...to...
set prefix "${location}${url}"