For anyone who is wondering why they are getting kicked out of The Sims 3 without an error message... Please check to see if your time machine automatic backup is on. If you are running time machine you will be kicked out of the Sims 3 every time you play as soon as the time machine starts to back up (or finishes I cant tell) . I have been dealing with the issue since I received the game and the nimrods at EA couldn't come close to figuring it out so I never even called them. Hopefully EA will patch or update the game to fix their complete ignorance of an application that ships on EVERY new mac (Which you almost would need a new one for the graphical requirements). Anyway, Please turn Time machine off before playing The Sims 3 and enjoy hours of non stop play time. If you do not have Time Machine running and you are logged out unexpectedly then I can help you and I'm sorry. P.S. I turn Time Machine back on after I play just to be on the safe side.