Could you explain the internet connection redial situation? How long does the disconnect/reconnect take? This pool has vardiff and its problably acting like you are pool hopping from what you are describing about your hash rate staying low after the redial situation. I would start with getting stable internet and then either get better mining software or look at some Dragon miner(I'm assuming since you have to adjust difficulty yourself) threads to see what they are set at. I remember some saying either 1024 or 512 depending on machine.