We're not sure how long deposits will be disabled, but we're tradable on 2 other exchanges if you're mining. Check out Tradesatoshi.com and Novaexchange. We're actually seeing decent volume on Trade Satoshi, with us being their 2nd highest volume coin usually.

I know that that's no fix or solution to your question about Poloniex, and it would be ideal if miners were able to deposit into Poloniex. However, since we can't control this, depositing on the other two exchanges are possibilities.