I think I understand what you mean. but shouldn't it be on with:
Allow from all
No, still not. Apache needs the module dav, which is not included per default:
# Distributed authoring and versioning (WebDAV)
# Attention! WEB_DAV is a security risk without a new userspecific configuration for a secure authentifcation
# Include "conf/extra/httpd-dav.conf"
This is MY httpd.conf (and i did not change anything) and as you can see, the dav module is commented out.