Many readers are reporting trouble when clicking the "Load more posts" button on the home page of my website. I have had the same issue.
After clicking the "Load more posts" button, the page will go blank (and it looks like it's trying to load a full-page ad from doubleclick.net) and will continually act like it's loading, but will not display the page at all. It will remain blank, preventing users from being able to see additional posts.
I don't know how long this issue has been occurring. I only heard about it today from a few users. However, it seemed to work about a week ago just fine when I tested it then.
I am currently using Firefox beta 17, but I've also tested Internet Explorer 9 and 10, both of which have the same issue.
Blog url: http://trutowr.wordpress.com/