I suggest everyone stop using any bots on Poloniex when they are overloaded. The DDos claim is utter bull. Their systems are always bogging down when they hit more than 35K users. there were almost 40K yesterday. It's down again today too. (still is). No API access is working and tons of people have lost money because of the lag/inability to cancel orders or cover short positions. Scary.
Unless they beef up their systems BIGTIME ASAP, a LOT of people will and are pulling their accounts off there for other exchanges. I might be doing the same too.
On the other hand, Leonardo works very well on GOOD exchanges. :-)
I was just going to say, I found 3 buy orders there for the same price. Looks like it couldn't cancel and just kept adding.
Another idea instead of stopping trading is to take most of your coins and put them in margin or lending (if you're using margin.) You don't have to lend them out, but they'd be untouchable by the bot.
I just set them at an extremely low buy or very high sell price using the manual trade. I stopped trading on polo for now as it is way too unstable.