My imprecise results since the last payout...two different addresses used.

middlecoin = 0.005286 BTC/Mh/s   (about 2.23 Mh/s)
useast =  0.005322 BTC/Mh/s  (about 2.03 Mh/s)

I'll continue to monitor.  Periodic checks throughout the day showed that both pools were mining the same network.