When mount.davfs becomes a daemon to serve the requests it fails to release the terminal. This has following effects:
1) When using davfs under automount the first call to the filesystem hangs.
2) Calls like
ssh localhost "mount -t devfs http://example.org/ /mnt/some"
hang until 'umount /mnt/some' is done.
The ssh connection can't close before the tty is released.