Also "Some btc stolen" is just a terribly scary bit of information. They should be more reassuring, even if there is no reason to be.
If things aren't clear, I prefer the news to stay unclear. No point in given clear-looking news ala MtGox when you don't have definite answers.
poloniex volume had been going up significantly, but i wonder how much of the deposits where in btc (rather than altcoins), though I guess all buy orders were susceptible (being still in btc).