I have a WordPress site with Thesis theme installed on it. All was functional and looking good a few weeks ago but recently I noticed something strange. If the post is too short and there are no white lines then the color of the sidebar will overlap the content box a few pixels (many of them..), for some reason. I did not notice this because I stopped making short posts and started focusing on rather lengthy quality posts. What I recently done is update the theme to the latest version and install W3 Total Cache to increase load speed because my site is burdened by all the plugins. I suspect it's either the theme or the caching plugin that is causing the issue. This ain't that serious issue and I won't be having it as I'm making big posts but this gives an unprofessional look. I really ain't keen on changing the theme. I've already spent a lot of time on customizations. But this, I'm unsure how to go about it. It's actually longer in height.