Backing up to Yandex.Disk using Déjà Dup in Ubuntu and not only in it

I have long wanted to finally set up a backup in my Ubuntu. And then after upgrading to 11.10 I saw the “Backup” parameter in the “System” settings. After successful use with Ubuntu One realized that I did not have enough space (at the time of writing, 5GB is provided). Pay for extra space was not going to, because i don't really need music streaming .
After the recent announcement ( yet ) Yandex.Disk with 10 GB on board, I decided to set up backup files on Yandex.Disk. Looking at the settings I found that Déjà Dup (day-ja-doop) supports Webdav. In principle, the program supports many storage methods, but the reliability and free of charge in Yandex.Disk suit me perfectly. Backups can be done not only in Ubuntu, but also in other Linux distributions. The program itself is included in Ubuntu from version 11.10, if you have a lower version, add ppa: deja-dup-team / ppa.

And so, we have an invitation to Yandex.Disk (if not, we get it ) and Ubuntu with Déjà Dup. All screenshots were taken in Ubuntu 11.10 in English, so I apologize in advance :).
Go to Settings -> Backup:

Next, set up folders for backup and schedule. In the Storage setting (I don’t know how accurately translated into Russian) we set the Yandex.Disk settings:
Server: webdav.yandex.ru
Use HTTPS
Port: 443
Folder: in this case, I created a separate folder in Yandex.Disk / backup_ubuntu, since many files are being created
Username: do it yourself.

After all the settings, go to Overview and start the backup.
To request a password to access the server, enter the data for Yandex:

Next, the program will request a password for backup. The decision is yours, but it is better to set a password, at least a simple one:

After successful input: