I was having the problem with the latest version of Firefox; I was able to post just now with no problems (nothing missing) on the La Bamba account (in Chrome), including uploading a photo. I came here to note that, and now everything seems to be in order ...
Let's try a photo ... well, it sort of works. When I use the advanced uploader, once the file is uploaded, it doesn't show that a file is uploaded, and I can't "attach" it wherever I would like within the post, but it does show up as attached when the "add reply" button is clicked. I had the same phenomenon with the basic uploader, with the exception that the file would show as uploaded, but then would dissappear when "attached."
And yes, I cleaned out the cache, 555. As I say, the advanced uploader worked just fine in Chrome. Also, here in Firefox, I can see the bar with the smilies and the editing options, and while I can make changes to text, when I click on the emoticons, nothing happens (as in the bar below the post window doesn't appear).