The brazilian made bills must be really horrible for cashiers or anybody who recieves these bills from other places than ATMs.
They are quite different from the normal ones (i.e. paper feels different, serial number is printed differently), very confusing.
Anyway, with all the inflation they had for so many years, it is quite ridiciolous that they don't introduce 500 and 1000 peso bills. That would solve a lot of problems. My wallet has never been as bulky as here. Tried about 10 different ATMs today, only two had money (and 2hr+ queues). One should not put money asside when the currency has 30%+ inflation, I am glad I did it nevertheless.
On TV they said the issue should be resolved within the day. I'd like to believe them but I can't. Only fact I know about is that the last shippment of brazil-made 100-AR$-bills arrived, which indeed should help a bit.