I have been having the same issue. Generally, right after having teleported into an area or as others are teleporting in. Framerates will drop to 1-2 then client will crash. And to address the 'upgrade your toaster' BS, as with some of these other people, I'm actually running a pretty powerful rig. It is sounding like AMD is the problem, though, as I'm running 2 HD 7970's. Sucks not being able to participate in the hunts.