Fair enough, but I have only Australian (and probably US) language files installed in Windows 7, and random apps, like ConText and Thunderbird, suddenly switch keyboard layout, while other apps running at the same time do not? Closing the offending app and simply restarting it solves the problem every time, but it is frustrating to be typing and suddenly it seems to switch.
If I knew what was causing it, I could stop it.
Sorry, that's enough off topic blathering.