Can someone explain this to me. This is copy pasted from https://mining.bitcoin.cz/stats/.

20957   2013-11-26 15:52:43   0:02:35   12301112   1191   0.00238445   271627   25.10929891    confirmed
20956   2013-11-26 15:50:08   2:06:37   621115370   48184   0.00216099   271626   25.31762960    confirmed
20955   2013-11-26 13:43:31   4:16:28   1269260019   37362   0.00000000   271612   25.06672930    confirmed
20954   2013-11-26 09:27:03   6:10:40   1798179211   177845   0.00265711   271587   25.35120125    confirmed

In line 20955, block number 271612 I have a zero payout, but I also obviously mined the block before for over 6 hours, that one for over 4 hours, and the one thereafter for 2 hours.

Why is this block paid at zero? I emailed info@bitcoin.cz already 2 days ago. Ive had no response.

This concerns me because I'm  providing shares to the pool and someone somehow is getting a payout for this block, I checked it on block chain, it was certainly mined by slushes pool.

What am I missing here?