Kraken's always been shit. Now it seems extra shit with a dollop of particularly pungent shit on top. They may never have been hacked, but they've certainly screwed enough people with their non functionality.
The trouble is, they are the only exchange that allow SEPA withdrawals for a small fee (just 9 cents). Others like HITBTC charge 35 euros.
I keep hoping Kraken will solve their problems. I'm sure they're working on it, but have just been overwhelmed by the number of new users.