I'm running Flashlight 1.4 on Wordpress 3.3.2. My website is http://brainbandits.com.
I run a blog and we post content daily - however, now when I add a new post, the left sidebar on my homepage disappears as well as the "next page" links, and the background. The only thing that remains is the posts. An example of what that looks like is here: http://brainbandits.com/2012/04/26/kid-cudi-d-h-m-u-w-s-m-o-t-w/ This is the only post that reflects what happens to the site when a new post is added. The only way I was able to fix the look of the site was to remove my new post, so the homepage looks as it is supposed to. I tested the problem by trying a variety of different new posts. No matter what the post contained, when it was added, the problem happened, and when it was removed, the problem was solved.
The only change I made prior to this was that I removed a text widget from the sidebar. The widget was basic text and an html link. Once I removed that, and added a new post - the left sidebar, including my logo, disappeared. The background as well. I also noticed that in the post linked to above, the preview text on the homepage now included text from another post (that text doesn't appear inside of the actual post when clicked on).
It's very important that we get this fixed as soon as possible since we post content daily and can't afford for the sidebar / branding not to be there, so any thoughts on how to do so would be greatly appreciated!