if only 1 share is submitted and it solves the block all payment goes to the one single miner who solved the block because he was the only miner that worked on that particular block. No other miners submitted any valid shares for that block so no other miners get paid. It is completely fair because as luck could have it , it could of been any of our miners at any given time who happen to submit that winning share first. Also the block is solved instantly so your miners just go on to working on the next block and are not wasting many shares due to long polling.
You do not see this as much with Bitcoin pools because the difficulty is so high but you can still experience it if you look around, especially at Slush's pool where he still uses his own brand of proportional payout. Especially with Namecoin merged mining, sometimes you get 0 reward for some NMC blocks because it is solved before you can submit any amount of valid share and get scored.
I understand that. But if you look to your stats you can see that 7 blocks of last 54 block had only one share. Even at low difficulty (it's about 100) it's extremely lucky. And i noticed it several times from the start of the pools - even at difficulty 400. And times for these blocks are sometimes almost 2 minutes .
20702 1 12/06 7:38 pm 2 Min 1 4950 DVC
So it means that at pool hashrate of 1Ghash was commited only one valid block during 2 minutes?
I don't say there's anything wrong - just wondering.