If you were hacked, did you use the same password on Mt. Gox as this Bitcoin Forum?
It seems as though everyone that was hacked was a long-standing member of this forum (no newbies). That could just be a self-selecting bias, as active users of this forum probably have more tied up in Mt. Gox, however it's one possible vector.
There seems to be some people that were hacked that did not do mining, so the only other possible vector left would be this forum itself.
Please move this topic to the general Bitcoin Discussion, thanks.