Does tapping the actual control keys have any effect? Occasionally when I've had a key get stuck in the buffer it's because there was a press down but no release signal. Pressing the actual key issues another down but then an up which resets everything. I know that doesn't really find the cause but it's easier than a reboot. Oh, but I don't have one of those machines so I'm not sure that my stuck key problem is related to yours.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…