Question:
Why is it that until yesterday no one's transactions were affected by Tx Malleability DDOS attacks, but once MtGox declares it to be their issue, all the sudden everyone else is hit by the same attack? Is it copycat hackers at work?
Maybe it gave some people an idea, or it gave people the right opportunity to use the exchange-rate tanking weapon they had been sitting on for a while.
There is still a large difference, the systems at Gox misuse TXIDs, other exchanges now are unable to process withdrawals because the stream of crap is creating a situation their systems aren't designed to deal with. It's a lot like comparing a server error to a ddos. The first one is a server issue, the second one needs to be mitigated.