I checked kdebase from the stable branch in KDE SVN, and the string is present in kdesktop.po of that branch.
According to the headers of the file, it was last updated at 2006-04-28. The file is 100% translated. -- Buttons on unlock dialog or in English, not the native language https://launchpad.net/bugs/67951 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs