Taja, I just updated PhoenixMiner from 4.0b to 4.0c on a rig that mines at eu1. I don't see connection problems on both versions, but my address is like this: eu1.ethermine.org:5555.

I tried eu1.ethpool.org now and I have this error: Unable to establish secure connection to ssl://eu1.ethpool.org:3333: wrong version number