I'm offering to pay you 5BTC should you release a detailed explanation of the problem, and the fix. I don't even mine in your pool (I actually hopped on IRC the first day you started to give you a couple suggestions/features that I would have needed to join). This way, you are now splitting the cost and the entire community as a whole benefits.
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As one of the people who was trying to help track the bug down, I'm a little offended too with the "I'm going to withhold the fix", especially given that Pushpool is open source and cost a lot more than a day to develop.
I'm going to raise the bounty by another 2 btc for releasing the fix, but encourage you to just do the right thing instead of being mercenary and taking the money.
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