No I don't think it was the windows key. That actually happened also but I was able to get back to the game without too many problems. It must have been something else.
Concerning the bottle : I understand that it works the way you explain it but it just doesn't make sense. They should have given that specific bottle a special name or special appearance. Something like "bottle of magic Perrier to help thirsty prisoners". That at least would be clear.
