dub nerd, I dispute this. I was well aware of the previous guarantee covering 90% of €20,000 and had so arranged my funds as to have lost the minimum. If the banks had closed, I would not have lost "every cent", only 10%.
If a bank went down you have a fair chance that you get back 90% of your deposit. If all the banks closed, it's it anyone's guess how much if anything you'd get back! There simply would not be enough funds to go around.