Well it really depends of the game and mostly how much time did I loose. I broke one game disc after loosing an hour for the second time. It was C&C Red 2 and I had done a mission for an hour and it crashed then I waited several minutes to cool down and gave it another go and then it crashed again in the same stage of the mission having taken almost an hour again after that I calmly took out the disc and calmly broke it to half. Mostly though I get angry and try again after some time and try to remeber to save more often.