Now I’m stumped. I removed the single entry in Update Services and commented out the pingback lines in post.php, and it still hangs. I guess I’ll just have to have patience.
Why is it still doing it when I have the option unchecked? Surely, that’s a bug.
More info: I copied my site over to another host (Dreamhost) and it has the same problem.
I have noticed that it doesn’t happen when I edit a draft entry. I removed the Pingomatic entry, and the stall still occurs.