Comment 27 for bug 185986

Same on Ubuntu 13.10, 14.04 and 14.10.
Not using Nautilus or any other general purpose GUI file browser (only MC/ls and GNOME dialogs sometimes), uplink is fast enough, but if you want to upload/download some files more than 10MB in size each everything becomes inresponsive.

For instance, if you mount to /path/point then «ls /path» will get stuck. For instance, I run BOINC client with homedir there, and I can't connect to it with [G]UI. This all is because davfs is very single-threaded.

It even doesn't use ¼ bandwidth, although it could do, for instance, 2 threads for upload, 2 for download, if necessary.
gui_optimize set to 1 — doesn't help (and not designed to help with this)
cache size set to handle 6GB which is quite enough to handle most of upload batches I fed it with.

How can we help with solving this?