No other exchanges with similar problems. That narrows it down to Polo.
That's the easy answer... maybe the easy, simple, correct answer.
The more complicated answer is why does this keep happening.
Once again, is it Polo or Ltc. Is there something ltc has done to now make Polo have to "take them offline" for a bit out of precaution?
Is Polo having issue with ltc traffic, and this is a way of throttling it (like Polo has run out of ltc in their hot wallets)?
Is Polo trying to manipulate the market?
This is mere curiosity on my part... I believe both ltc and Polo are here to stay.