MS FS9 Fuel Shutdown???

PMDG crew....I'm not sure if this has any bearing, you may have already checked this out. But I thought it worth a mention.Chatting with another FS buddy on the phone tonight, I was convincing him to buy the PMDG 737. I was relating to him the realism of your model, and among other stories of how much fun I was having, I was telling him a story about how I had got caught napping not managing my fuel (something you unrealistically don't have to do with DF) and experienced a flame out en route. It was totally my doing, learning curve as it was only my second flight. He immediately mentioned how he has been flying the default 737 only in FS9 and the same thing has happened to him as well. I asked him for details, he said he had plenty of fuel, tank switches were in the proper setting and the default 737 engines just quit on him. He manages to get an air start and continues on. Although I haven't heard or read any other people mention this problem with the default aircraft, maybe this isn't solely a PMDG problem after all?Something to look into?