I think some miners have withdrawn their wrongly calculated coins and now ipominer is trying to compensate for negative balance from us who have left our coins there...
Ipominer tries to compensate there own fault, and the given explanation makes it even worse.
For now ipominer have stolen some coins, not much in my case but still.
I just stopped the miners, and if they don't put the coins back in my account, i will never mine with ipominer again.