A quick look at some threads reveals that this has indeed been a problem. I don't visit those forums, normally, so I would be uncomfortable doing something at this point, but you could try contacting administrators/moderators who are active in those forums (Fquist maybe?). If you think that an individual post should have something done about it, you can also use the "Report" feature.

That said, there are very few guidelines in place for how to deal with trolling. The administration agrees that it is a problem, but we haven't really decided on how to deal with it. This is maybe why more has not been done in cases like these.