Just hung up with AT&T tech support, I was told that an update is in the works and should be available in a couple of weeks(of coarse no exact date)! Hopefully this is the truth because this issue is very annoying.  I thought it was a problem with my phone, but now I see it's everyones problem.  My phone, just as everyone elses, has been doing this along with silencing my text message notifications since day 1 of the updates.