Well, sure TSMC's yields are terrible and volume's, but other 40nm products are out. That they had to go for A2 silicon means it's nV's fault, they needed to fix something. It's a common occurance, so nothing really wrong with that, other than all the hype that lead up to A1, so really c'mon, this is also nV's doing, as well as simply a bad production run. But the difference is, like I mention in the other thread, that TSMC just makes everyone else's mistakes more costly.
It's like speeding; it doesn't cause accidents in a well kept car (or bike in your case) with a good driver, but whenever something does go wrong, that speed makes the potential result much worse.
Let's just hope A2 is production ready and there's no A3.
I'd also hope that there wasn't more PR BS, but I know that this is only the beginning of the next round.