My reward was also "cut in half".
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)
I raised a ticket, and things will be sorted out as usual.
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Yep 22106 was also half here.. email sent to support:)
Regards
M
My payout was lower by 18% relatively to the proportional number of my shares. A possible explanation to this is a sudden rise in the pool hash rate towards the end of the block, which decreases the payout of all the other miners (but at the same time make a significant contribution to solving that block faster). Let's try to illustrate this with an example:
The pool hash rate= 1800000 GH/s Your hash rate=200 GH/s your expected reward=0.002777778 BTC
Now assume that Miner X joined the pool with 200000 GH/s a few minutes before the end of the block, due to Slush's 'anti-hopping' algorithm, Miner X's contribution receives almost full 'weight' despite occuring towards the end of the block, so the increased short-term hash rate at the end of the block is now 2000000 GH/s, your reward drops by 10% to 0.0025 BTC. This is not due to any 'fault' at Slush. Actually it might have been caused by a technical or other problem on one of the competing pools, which caused briefly a massive shift of miners to Slush as their 'backup pool'.
Just my 2 mbtc.
Enjoy the recent burst of solved blocks, which more than compensates for that 'disaster'...
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Cheers
My understanding was that the calc, assuming you are mining at the time the block is found (you havent had a blip in providing hash rate etc) is my shares / pool shares * Block Value.. for a rough calc. (not deducting fees here)
therefore for block 22106 :-
22106 2014-05-19 16:30:41 11:23:16 18010425802 3586935 0.00206705 301575 25.10258983 97 confirmations left
which makes the calc 0.0049994
The three previous blocks using the same calc would have been :-
22105 I get 0.0048193
22104 I get 0.0049920
22103 I get 0.0049467
All very similar and in fact almost identical to what was paid out, as were the 4 blocks post 22106
Whilst I appreciate your point about another pool jumpin in, to halve the rate paid it would have had to be approx 1872607.589 Ghash/s jumping in.. approx the rate when the block was found I believe, to drop it 50% and the your shares / total shares dont give those values, and we have also had reports of people getting double payout on that block, so something is not quite right.
This has been happening a lot since we moved to 60 minute averages, in fact one block, for me, dropped from .0048 as the calc to 0.0009 as the reward.
Whilst I appreciate your suggestion, I think something more drastic happened in this case and may be symptomatic of other blocks like this in the recent past.
I know it's not a huge issue, but when you only make 0.1 BTC a week (on average), it's a bigger deal
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
Regards
M
PS dont get me wrong, I love the block count this weekend, and I love this pool, but if theres a possible issue, I think it's only fair to investigate to see what actually happened.