Quote from: lophie on March 18, 2013, 01:39:59 PM

There was a discussion on IRC and on these forums regarding if the fork made double spending possible and I was refuted and plainly lost the argument. No the fork did not enable the possibility of a double spend

It most certainly did. The OKPay double spend was an intentional double spend (performed by manually constructing and broadcasting a transaction that re-spent previously spent funds) and was successful due to a combination of factors.

There still are even more double spends that can be performed (as they are still unconfirmed and not yet spent) but simply haven't (yet):

Quote from: piuk on March 17, 2013, 10:02:17 PM

There are several transactions that were confirmed in the major fork a few days ago but have not confirmed in the new chain for some reason. Normally these transactions would be pruned however since they are already included in an orphaned block they cannot be removed, this is unusual and I'm not sure why they are not confirming. I have rebroadcasted them several times but it doesn't seem to have helped, the best course of action would be to double spend them with another client.