For some reason, when I try saving a post that one of my contributors wrote, WordPress freezes and fails to save. It seems to be an issue with the text of the post, because when I try saving the post title and tags, etc. without the body of the post, it saves just fine. I've tried cutting and pasting the article into the post, paragraph by paragraph with some success. But some paragraphs will save, others will not. Any advice would be much appreciated.