from gmaxwell
21 January 2013
And you'll note that page is citing a forum thread from 2011. Bitcoin v0.8 rolled out the first round of fixes to eventually remove malleability way back then too... and we've seen bouts of amounts of malleability use on the network, back in 2012 if not sooner I haven't grepped my logs.
I overlooked the 2013

But if it did occur, then a spend with the same input,output and quantity should have shown up to the receiver address right? Just not with the original txout. It wouldn't explain a transaction delay where nothing is transacted or would it?
Let me explain further, ppl dont receive their coins isnt because of this. Its because Gox system (bookkeeping) got messed up and send out non available coins since all tx are chain-linked.