Given that the problem described by:
http://www.modpython.org/pipermail/mod_python/2004-November/016784.html
has supposed to have been fixed in svn tree, the following workaround code
for this problem in Session.py is possibly no longer required.
# XXX Not sure why, but on Win32 hlist.directory
# may contain a trailing \ - need to investigate,
# this value is given to us directly by httpd
if os.name == 'nt' and c.path[-1] == '\\':
c.path = c.path[:-1]