My miner doesn't support dwarfpool. If you can raise 1 BTC (with a group of people), I will add support for it.
I had some time today to sniff the Dwarfpool connection. Strange that after all this time, they would choose to implement a non standard version of the stratum protocol. So its a Dwarfpool weirdness issue. Regular farm mining through eth-proxy works just fine. Im noticing a 7 Mhs increase in speed and more consistent mining speeds on my AMD rigs.