Is this normal to have Poloniex deposits stuck in limbo all day?

It's been almost 7 hours since my deposit, and nothing has shown up in my polo wallet yet. Also, it looks like Hive account@poloniex hasn't sent any withdrawals in that time either; it seems like their wallet must be frozen.

Is this normal for them? I feel like it's happened a bunch to me lately, but I never remember this happening with Hive account@bittrex.