Unstable access to Kraken website during bitcoin forking. Withdraw all coins asap... if it's not too late. Same goes for coinbase and other exchanges. Could be days before the site recovers. If you are prevented by the site from withdrawing your coins. Too bad.
Who's next to be shut by FBI?
http://blog.kraken.com/post/1183/bitcoin-cash-and-a-critical-alert-for-margin-traders-part-2-2/