"And after all - for majority of us the lost amount is rather insignificant - the daily income would be affected by a single-digit percentage. So - let's stop whining about it."  

Except that I had the exact same thing happen to me in the next block, too - meaning that I now distrust the reward calculations being made.  Even if the amounts being discussed are trivial, what is the point of mining at all if you aren't being paid fairly for the work you do?

I like Slush's pool, but have to consider moving over to a different pool if the problems here can't be resolved.  I don't mine for the money, I do it for the score and the BTC mined is how the score is kept.