The workaround for the workaround is to add "delay_upload 0" to davfs2.conf. I just tested it. With that option, Duplicity is able to upload more than one file over a davfs2 mount.
The details are in this wishlist request for davfs2 to disable caching: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=693607 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org