When I log out from my WordPress site some functions stops working. They work properly when I am logged in. Visitors have complained about this problem. I do not know why this happens, but these functions are important for our website to run.
The functions I have discovered not working is AJAX Links and Infinite Scroll, which is used in the blog. I am pretty sure this has something to do with the theme since two of my plugins is not running well. These are Facebook Page Photo Gallery, Jetpack by WordPress.com and a few more.
Using version 3.4.2 of WordPress
Thanks for your help in advance