There are several flaws that are still not fixed. This known vulnerability only "suspended trading" because people started using it too much. The other vulnerabilities aren't "in the wild" but offer similar exploits. I suspect that as soon as MTGox resumes we'll see a new exploit take its place.
If I were a conspiracy nut I'd tell you that the Merchant Services companies were responsible. But more likely I think that these issues are just the result of there being enough money at play now that there are those looking to beat the system and so instead of being a community of "hippies" who just want peace and love, the BTC community now has armed muggers and cat burglars. That's what happens when the hippies get to a point that they could buy mansions with imaginary coins they trade.
If I were a conspiracy nut I'd tell you that the Merchant Services companies were responsible. But more likely I think that these issues are just the result of there being enough money at play now that there are those looking to beat the system and so instead of being a community of "hippies" who just want peace and love, the BTC community now has armed muggers and cat burglars. That's what happens when the hippies get to a point that they could buy mansions with imaginary coins they trade.