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On my MacBook Pro, I occasionally use external keyboards, generally Windows ones and things have been fine.

Yesterday, I plugged in a new one, remapped the command/option keys so the windows/alt keys were in the same configuration, again, nothing new here. However, this time when I unplugged the USB keyboard, the laptops option/command keys remained switched.

More annoying is that if I go into the System Preferences -> Keyboards -> Modifier keys, remapping the keys to actions does not work. I can use the drop downs to disable any specific keys, but switching the behaviours does nothing. (Cmd/Option obvious, tried remapping anything to caps lock and a few other combinations, no joy. Restore defaults set the configuration to what I'd expect, but the settings are evidently ignored.)

So: Any ideas?

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up vote 2 down vote accepted

I had the same behavior. Clicking the Restore Defaults button in the Modifier Keys... pane of the Keyboard & Mouse panel of the System Preferences (take deep breath) of 10.5.8 didn't work to unswap the Command and Options keys but, clicking it after plugging in a non-Apple keyboard worked, so the MacBook Pro keyboard started working correctly (a big relief).

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