Hello Guys !! I have a question. Last few days I'm having problems with my Antminer S2, it keeps shutting down after few hours of mining at kano pool. I was just wondering about block % stat: if for example I have 0,05% participation in specific block then how long it will take to reach 0% after Antminer shutdown? Is it proportional? I mean: block mining time = time to reach 0% of block shares? It's just my curiosity

S2 ... hmm I put out an new S2 firmware/cgminer recently.
https://github.com/kanoi/cgminer-binaries/tree/master/AntS2Maybe if it keeps shutting down, it may be worth running it a bit slower?
As for share rewards ...
The block statistics on the workers page are not directly related to reward.
They show how you have mined during the current block and reset the counters (except "Last Share") each time we find a block - as do the "Shares:" and "Invalids:" in the top left of the web site header.
The Shift stats are what is used to determine your reward.
Any share you submit gets rewarded in each block found in the 500% (plus a bit) after the share was submitted.
That 500% is: the shift the block was found in plus all shifts prior to it back until it is >= 500% - which is about 13 days at the moment.
So stopping and starting mining doesn't affect the shares you have already submitted.
That explains everything. Thank You Kano! I really appreciate it. And as for Antminer's S2 I removed hash boards with no result but I think I know what is going on: PSU fan is not working and this might cause an random shutdowns. But I'll replace the fan and hopefully everything will be ok.
Besides I would like to ask about S2 new firmare: could upgrade change productivity and give some better results with mining?
And thx for explanaition about the pools like BTC Guild and Eligius. Many times I was wondering which pool should I choose
EDIT: Hmmmm....I can't download latest firmware. Is there any other way? I would like to try it because there are few changes which are interesting