I'm no tech guru, but the big guys must be out -- so I'll have to do.
Make sure you're using the most current downlaod of the game. If you are, I wonder if your install was defective for some reason. Try uninstalling the game, and download and install a fresh copy. You may also want to download the skins pack, to save on background downloads while you're in the game -- but I dont think the skins are why you're having trouble.
Can you play the offline version? Might be worth trying that first, because if the problem is a video or other game conflict on your desktop it might freeze things too.
Hope it helps. Maybe once Friday night's over the tech savvy guys may be able to help you more.