Come to think of it, simcity has never crashed on me once
I just tend to build up the city just for the sake of striking it down with disasters (i get bored easily lol)
I get it too about 200,000 pop, and put a few tornados through it, start an alien invasion and so on until the pop is down to something near extincted... and start re-building and repeat
As much as I hate Micro$haft Windblows, I rarely have it crash on me, the last time it was doing it, I found it to be a problem with my SB 5.1 sound card, got rid of, and problem solved