Well you have to adjust for all the rejects... I have 5 MH - and your pool bounces from 2.8-4.5 in accepted. On other pools like yours I have < 3-5% rejects. So calculating pr MH accepted is giving slight misrepresentation of real returns. With pure LTC mining I have < 2% rejects - so my net rate would be about 4.9 MH.

Right now CM reports my rate (hourly) as 3.25 vs the 5 I have. My miner reports 11% reject +2% stale. That should NOT result in a measured CM rate of 3.25.