[Zope] WebDAV BUGS and access to /tmp directory

Hi, I am back trying to figure out why my zope crashes on open('/tmp/tmp4fd4foo') kind of opens, which seem to originated from webdav code. Question to someone who is expert in webdav/*.py code... I just would like to know so I can further my investigation into the bug/malfuction of zope on OS X. regards, Pavel