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Poloniex accumulation and release highly affected the Steem and SBD price.

I don't use Poloniex, is Steem back to normal there? Or still Problems with the Wallet?

It normal now. But huge amounts were frozen in the depo cloud. Now I guess many people sold because the price dropped too much since their depo.

Since when it is back to normal?

From what I read it went completely back to normal 2-3 days ago.

Edit: But I don't personally use that website, so don't put too much trust in this comment.