The Sims 3 freezes!!!! HELPPPP

What comes in Console when that happens?
(In /Applications/Utilities)

Which exact version of Mac OS X do you have? 10.6.x, 10.7.x..?
Which is the version/build of that Sims 3 game?
Did it ever work on your Mac?
Do you have a second user on your Mac? If you do, does the game load under the other user?
I also had this problem. I went to a previous save, before it started freezing up, and it worked fine. I noticed that after I played guitar at the park and acquired a slew of new acquantainces, it began freezing frequently again. give the solution..?