I can duplicate this with IE7 if I log out of my account. All the text in each of it's cells is centred. If I log in though, it goes back to left justification.
I'm looking into it now. Thanks for bringing it to our attention.
Fixed for now. It seemed to effect the entire wow site when you weren't logged in (re: being served ads) and were using IE. There is the odd time when FireFox is too smart for it's own good and we don't notice things like this :)