Yes, I have been subclassing the DAV module and improving on the existing code, regarding that we couldn't ship our own version of the whole python-webdav library (as in v5.x). At commit b2a2c3f95416788, on 2010-04-06, we explicitly deleted our custom copies of the DAV module and linked to the upstream project, in fact. bzr revid: p_christ@hol.gr-20101209095950-qf2ppgdxw8y2lake