If you have encountered an issue since updating please can you report it here. Hopefully everything will be fine but if there are any niggles we can gather the info in one place and compare models so it makes it easier for EA to collect information. Please provide the following:
Mac specs. (model, year, processor, RAM, graphics)
Have you upgraded from a previous version of OS X or have you done a fresh install?
Which Expansion/Game/Stuff Packs you have installed