Looks fine to me. Usually if you have issues that suddenly appear after updates, it’s always recommended to deactivate each of your plugins to see which one may be causing a conflict with the rest of your site. But your site looks ok to me.
I’m seeing something totally different. Your theme looks just like the demo from my end. Maybe you could try logging out or viewing from a different browser. If that works, then it’s possible you have an admin plugin of some sort that is causing your site to show up weird.
Let me know if want a screenshot of what I’m seeing.
Here is what it looks like – http://i.imgur.com/pbojHlK.png Don’t mind the text, it doesn’t look like that, the screenshot program I’m using bundles it all together and increases the font for some reason…..but your font looks fine as well.