After the last post, the sidebar moved down for every single post. Maybe it is not related with the last post, because I unpublished the post and tried, the sidebar moves down again while displaying single posts. This is the last post: http://www.marketoloji.com/2011/11/01/profilo-ve-anne-nicin-baktin-bana-oyle-klavuzu/. The video in the post is not large (checked the width). It doesnt have any large image or anything else. I tried to adjust the width of container and side bar in the CSS file. But, no solution.