The fire jumped between rooms? Was it an open floor plan with no door to the laundry room? It's excessive but wow... not sure I'd mind it personally. Things like that don't happen often enough and it gives me bragging rights when it does.
I had one fire started by the cheap grill in the backyard that lasted for .. around 6-8 hours it kept going from one flammable thing to another while Grimmy waited in the house for his prize. The sim had died fairly early on but he waited till he was safe I guess... This was awhile ago though maybe 2 years?