Is there any chance of bringing back the "plain text" editing view, which shows the BB or HTML code contained within the post?
I had a problem with one post (Post 33 in the "Long Distance Tow thread) which displayed less than half the post when it was submitted. Editing revealed that the entire post was still there, but I was unable to do anything with it. From the format during the attempted edit, I deduced that I had left out one [ /quote ], which resulted in the rest of the post being treated as a quote, and I was unable to place the cursor anywhere useful.
In another forum I use, a similar thing is quite common, usually resulting from the edit of a quote, which reslts in the cursor being "trapped" within the quote box. Easily solved by switching to plain text view, and shifting the cursor to after the final [ /quote ]