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My BTC were "on hold". I emailed them yesterday saying that I was pretty sure I hadn't traded DRK in the "big move". They  promptly released my BTC  (within minutes).

I'v just initiated a withdraw of 15k DRK and 5KK MINT from poloniex. Need e-mail confirmation.

I just got the hold released. I'm all good now.

File a ticket, and give c-cex time to respond.

It's nice that lojack is trying to return the funds, but let's be clear: all the funds will never be returned. They can't be, not after what he did. Specifically, buying DRK up to 0.008 with a volume of 104K DRK, and then selling DRK on Poloniex for less than one fourth that amount (how many were sold and at what prices?) means if he basically "stole" 310 BTC we're looking at about one third to one fourth being returned, right?

It's great that he's willing to return what he can, but basically C-CEX lost at least 200 BTC due to a flaw in their code. Which is pretty freaking crazy -- how do you go live with code that has that big of a flaw? It sounds like lojack isn't even a "hacker" and simply had a deposit show up with the wrong amount? Anyway, C-CEX does how much volume? If they did 1000 BTC per day (and I don't think they do!) that would mean roughly 4 BTC in income off 0.2% trading fees (0.2% on the buyer and seller). About 40 days then to recover 200 BTC? Hopefully they stick it out.

I personally have a hold of 6+ BTC that I'm waiting to see what happens. I sold DRK at prices between 0.0025 and 0.003, which wasn't that far off the mark before all this craziness. That would be either ~2.5K DRK or ~6+ BTC. Guess I'll just have to pray it all works out.

I traded Gridcoin. Not Darkcoin. I'm not sure what hours this all went down.

But he was kind enough to respond to my Skype message.

I see it like this...

Due to a bug in code on the c-cex exchange, someone found their account with a ton more bitcoin in it than there should be.  That user then made a conscious decision to trade the bitcoin which was not rightfully theirs.  Everyone on the other side of those trades were technically receiving stolen property.  The non-existent bitcoin (it's just a virtual exchange balance remember, not an actual bitcoin wallet) was converted into darkcoin by trading on the exchange, effectively transferring the non-existent bitcoin into other traders accounts.  The dirty darkcoin was then laundered (or tried to be) by trading for bitcoin on poloniex.

It seems both c-cex and the user who was consciously involved in this are making a great effort to retrieve lost funds.  Problem is, due to the trading at great loss, a large chunk of this bitcoin that never existed in the first place is now in the hands of everyone with whom they traded.  This is why your bitcoin balance at c-cex is frozen.

If authorities were involved, the accounts at poloniex would likely also be frozen during the investigation period.  If this were a bank error of similar scale which was deliberately taken advantage of, the person involved could end up with a prison sentence.

+1


... and another +1