I am aware of some bugs in the current implementation of the pool using mmfce.   I have tried to plug as many of them as possible, I think I've gotten most of the issues with the missing block payouts.

Instead of trying to continuously fix mmfce, I'm working on a new pool software, which should work much better and run much smoother than this version.   Until I get the new version out, I will continue to patch this one up as much as I can.

BigVern