Before updating your Mac to Lion 10.7.2, you may want to consider this.
One of the biggest issues, and the one I'm going to cover is pixellated/choppy Sims.
EA hasn't released anything acknowledging this problem and hasn't tried to help anyone with the problem.
So, how can I fix it myself/not get it? Right now, it seems that the only way to not have this glitch, or any glitch, is to not update to Lion 10.7.2. If your computer is already upgraded (like mine) then there's nothing you can do, you can't downgrade Macs.
For more help, you can visit this forum.