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I've also never had any issues personally, but I've seen many that have, so I've reduced my holdings to the bare minimum... Just in case!

We are complaining because we've seen similar patterns before when it came to Mt.gox and Crypsy. There's too many online complaints of stuck/missing deposits/withdrawals emerging and strange behaviour for there not to be something seriously wrong with Poloniex. Either they're not re-investing any of the money they've raised in fees in support staff and servers, or they're selectively scamming and getting ready for the big exit scam. Pick your poison, neither's good.

I've seen multiple times when a coin is being pumped and dumped that the wallets of those coins are under repair.