I updated to 2.0.5 this morning. In addition, at the request of a leader of the Wordpress team itself, one of the world's leading Wordpress techs tested every problem they could think of and could not find the issue.
In the continuing and all too long saga of trackbacks don't work on my blog yet another bizarre chapter has been written this morning.
They still don't work, tried more posts.
Yet, I went to look at the database and some entries - old entries had suddenly moved from to_ping to pinged some entries on 10/9 pinged other blogs on 10/19 - now that is bizarre. Yet current posts don't work. Did someone possibly make a fix and then put it back the old way?