If I set alt binz to NOT ask for confirmation on exit I can manage to press the X button on the top right of the window twice. The first time it starts the shutdown process, If I press it a second time while its shutting down I will receive an access violation (either read or write, not always the same) every time.
The reason I would press it twice to begin with is because I thought the first click didn't get detected by the mouse or some such, because it didn't seem to be shutting down, but in reality it was just taking a while.