I've lived in Buenos Aires for over 4 years now and never had problems really withdrawing money from the ATM machines. I have several high maximum daily limits and never had problems withdrawing money.
I've been outside of the country for the past 2 weeks on holiday and just returned and I noticed that since last week, none of the ATM's I tried withdrawing will allow me to take out more than 300 pesos (less than US$ 100 each time).
Before anyone says it depends on my bank back home...this isn't the case as I tried all my cards and they all worked before. I've tried at least 9 ATM machines around Buenos Aires and they all only allow 300 pesos each time.
Does anyone know if there is some systematic change put in place to restrict the use of cash going out of ATM machines?