How can I unlock my screen when my input is in a different language?
Go to System Preferences > Accounts > Login Options and tick "Show input menu in login window" you'll then be able to change it in the screen saver password window as well
In OS X 10.7 Lion, "Accounts" is called "Users & Groups". The setting "Show input menu in login window" really ought to be active by default when plural language input sources are enabled, though.
If you used before lithuania language and with this language locked screen.then you must to press in one time ctrl and alt plius number which for you need.