Can't change my username.

[Steam.]

Ok, after reading thousand's of ways to change my username, i still can't.

Here's a pic to show you that i can't.

http://www.imagelodge.net/imgs/xlr8/Screenshot-25s6.png

[mikewhatever]

I really don't think you can change the username. You can simply add another user with admin privileges, and once sure everything works as expected, delete the original one.

[sisco311]

sudo usermod -md /home/newname -l newname oldname
the above command renames your user(oldname) to newname and moves your home directory to /home/newname.

EDIT:

oh, you should also change the name of your user's primary group:
sudo groupmod -n newname oldname

[Steam.]

Thanks all.