I have mined at three other pools before joining middlecoin a few days ago. So far, I'm seeing less profit than the other pools I had mined before. Why is that? Could it be because the difficulty of 512 is too high for my miners? I have 4 GPU's: 1x6950, 1x7790, 1x7850, 1x7950. On other pools, I got about 1300 KH/S. Here, I'm getting 1000 KH/S. The other pools operated with vardiff; here, there's only one difficulty of 512.
You may be correct because of variance given the 512 difficulty, but if you were only on the pool for a few days, another possibility is that you haven't given it enough time. Our coins have to wait as they go through several stages (maturity, sending to cryptsy and waiting for confirmations, sending BTC back and waiting for confirmations). NovaCoin blocks in particular take a looong time to mature.
If you already included the "Immature Unexchanged Balance" and "Unexchanged Balance" columns in your profit calculations, then nevermind
