Mac os X - locked outside my account (language!)
This adds the language selection to the login window:


From the Apple menu, choose System Preferences.
Click Users &amp; Groups to display the pane (or choose User &amp; Groups from the View menu).
If the lock icon in the lower-left corner of the window is closed, click it, then enter the name and password of an administrator to unlock it.
Click Login Options.
Select the "Show Input menu in login window" checkbox.


Source: http://support.apple.com/kb/ht4099