Hasn’t time flown? It’s been just a month since World of Warcraft: Cataclysm launched and bosses have been downed, toons have dinged, rep is being grinded and guilds are exploring all that shiny new raid content. Well, just when we were wondering how well it's been doing, Blizzard has today announced that the game has sold over 4.7 million units! Not a bad number considering it’s only been a month. And people say PC gaming is dead …