Nexon Europe's Mabinogi was completely shutdown, and all players were forced to move to Mabinogi NA, and they didn't get their players or items...
Mabinogi's servers were already not as good as they needed to be for the awesome combat system to be smooth enough,
Mabinogi NA's servers were further away from European players causing more lag to start with,
and the overload of all EU players caused EVEN MORE lag.
It was basically unplayable - with all the lags, bugs and the horrifying movement mechanism, it caused me to finally quit the MMORPG with the best content I've ever seen... still waiting for a new Mabinogi to come up.
all of this because someone hacked the European cash shop.