I have to agree with the silent update. I think it actually messed up my 3g service as tonight at work I lost my 3G and was back on 1x. I used *228 to update my phone and my 3G is working again.
So if anyone else had the issue of the 3G vanishing on them tonight use *228 and see if it fixes your problem.
I didn't make the connection to it being an update that caused the problem until I saw the post on the camera focusing properly. I promptly tested mine and found it was working now.