Very unfortunately I have moved all my xml files into one folder (I was at /home/desgua/ when I run find . -name '*.xml' -exec mv {} ./logs/ \;.
Now I am very afraid of turning off my computer and not be able to turn it on again. I have my /home/desgua/ folder encrypted during the installation.
Is there any essential xml file that I should be aware of?
ps.: One example of fundamental xml file is ".encfs6.xml", which are required to mount two folders that I had encrypted. Fortunately I recovered it.
Edit:
I rebooted the computer and although I have lost the configuration of applications and Keyboard Shortcuts I was able to login again. So I can say that no xml file is needed to login into an Ubuntu encrypted home.
You can always create another user. No matter how messed up your home directory, you should then be able to log in as that user. Then copy the new user's .xml files to your own home folder. Some settings may be gone, but in any case your system will start up properly.