I've got a problem where some random event causes an effect similar to a key be stuck in position. It isn't anything that is a game hotkey, all that happens is whatever I've got highlighted in the menu screens flashes constantly (at extremely high speed, as opposed to the standard slow flash) and whenever I access a console I get a significant amount of lag as the whatever button is stuck is trying to shift the position of the upper window. I've got no special mouse or keyboard configuration, and I've checked that my drivers are up to date. I've had this problem (or something like it) in a few other games, and merely pressing the stuck key seems to resolve the issue. However, I can't find what the stuck key is in this case, as I've tried everything without success.
