Hi
Got everything mac at my place, and I think Macs are great, however I have had many bugs and glitches with the sims, and double that Since I installed seasons and uni, nothing to do with Mac though, I think EA are still getting to grips with its capability.... It's a long process, but if your patient you can still play :-)
Hope your not too disappointed, on a side note I used to always have a pc with windows, it didn't like sims 3 much either!!