According to EA forums and the Battlelog news comments, this patch is causing all sorts of problems. Most notably
--black screens (ironic since they say it fixes black screens, but many have never seen one)
--crashes 20-30 seconds into games.
I'm a bit frustrated with BF3 at present. They did something over the weekend which broke access to battlelog.battlefield.com for many ISP's around the world. I was down for 3 days before they got it fixed. I lost connection early Saturday morning and didn't get it back until 4pm Monday. Without hitting battlelog, you cannot actually startup a multiplayer game or see a server list to play on. Real bummer.