This reminds me of something, too. My siblings and me often play a (now) old RTS - Battle for Middle Earth II - against AI. When these matches go on a while, sometimes it crashes when defeating an AI.

Well I looked at where it crashes, and simply nopped out the code where it crashes (it was a null pointer access I think) ... and we haven't noticed any weird effects of that so far ... one of these days I'll get around to making it an if (ptr) fix and see that happens then, but it is not this day!