nice clean layout, but a couple of things, posts are long might want to consider using the <!-- more --> tag or the excerpt to break it into smaller, more easily digestible chunks, first page should be an attention getter, here are my posts, scrolling though 15 paragraphs of content to see the next post can be frustrating.
also, a couple of layout issues, this is my opinion not standards etc. just aesthetics, your two sidebars do not line up at the top of your page, just below the header, might need to add/increase the margin on the right hand box, and below the the two strips below your right hand box, look a little off to me, mainly because the one on the right has a wider white space area between it and the page margin compared to the top box.