I got this message and narrowed it down to something in the content of the post itself. In my case, I had two paragraphs and in the second one, the word “shouldn’t” caused the problem. When I removed the right-single quote (to: should not), the post submitted.
I have since attempted to replicate the problem with the single quote on a new post, but it didn’t work. It would seem as though it might have something to do with the specific length of that particular post.
Any new information on this would be helpful. Also, the installation in question is running on a RHEL 4 ES Linux server in my corporate environment (albeit behind an internal firewall). However, network latency is not a concern.
