Are the two that come to mind. Cyprus deposits in a couple of banks in 2013 above 100k were lost I believe. Icesave played out badly in the UK in 08, quite a few councils etc took some nasty lossses.
Either way, waiting for multiple years, winding up and down of court cases, bankrupcy proceedings etc to find out if the rest of your money is gone or not is not much fun.
The kind of person parking a couple of 100k in cash accounts is almost by definition risk averse.
If you have decent money, using single account/country is not just lazy, but stupid.
Below the list of the world's top 50 safest banks
https://d2tyltutevw8th.cloudfront.net/media/document/press-r...
Iceland bank issues were widely covered too
I would assume since the 100k are guaranteed by law that the state does not further step in on losses above that.
When there is no law like that in place the situation is entirely different.
FDIC deposit insurance, 250k per FDIC-insured bank, per ownership category.