Upgrade to 13.04, user picture shows up on lightdm. Can I change it?

So, I recently upgraded my Xubuntu to 13.04, and afterwards I noticed that there is now a picture of me on the lightdm login screen. I have no idea where this picture came from, I don't remember it being taken.

I guess it was asked for when I set up the account. Long time ago now.

Anyway, I was wondering whether it was possible to change this picture... I don't really like it.

Take a JPEG image of your choice. Move/copy it to Your Home folder. Rename it to ".face". Yes, a dot-file without extension. Log out, and You should see it!

It should be JPEG and also a square. PNG will not be shown (it works for User Manager, but not for LightDM login, unfortunately). Image of irregular dimensions will get streched.

This works for me on Xubuntu 13.04. Good luck!