Trying to open a margin position in ETH...
Every Time I get a random error. At last (about 25 attempts) I got success!
But... When I go to se my positions, I had open 2 more!!!!
I noticed the same. There where suddenly many orders which luckily failed. The kraken site gives you errors all the time and in the background they set up new orders.
I had this same experience, only in my case unfortunately the excess order didn't fail, so I ended up with the double amount of ETH that I wanted to buy initially... of course just in the time (a few days ago) when it began tanking afterwards. Thanks Kraken.