strange caps lock problem

Vista Home Premium 64bit

I don't know what happened or what I might have done to cause this, but a
while ago the caps lock key stopped working in all my desktop applications.
The only places where it still works are in a cmd window, the taskbar's
address bar, and Notepad. Everywhere else the state of the caps lock key is
ignored. The only way I can type caps is to hold down the shift key while



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