The new Otterbox fixes all the issues.
From an engineering standpoint, I don't understand how, though.
Edit : Looked at pictures of one, and I still don't see how it fixes the Proximity Sensor problem...
Maybe that extra 1 or 2 MM of the case???? If that's the issue, why would Apple make a software fix in 4.1? Because they don't want to say they fucked up hardware again?