This is a new USB keyboard. I did not install any of the software that comes with these things -- never have and would rather not unless all else fails.
Even CTRL-Shift-LeftArrow works but CTRL-LeftArrow just does nothing. CTRL-RightArrow is fine. Scroll Lock, Number Lock, and other keys also seem to function normally.
Anyone recommend some kind of key-stroke capture application to see how it's registering?