Hi, An example of a normal website link: http://www.yourwebsite.com/jokes/10502/Ashes-To-Ashes An example of the above link shared on Facebook or Tumblr http://www.yourwebsite.com/jokes/10502/Ashes-To-Ashes#Cgy8Io0pXq6szy6e.01 Resulting URL if loading jquery.history on the page. http://www.yourwebsite.com/jokes/10502/Cgy8Io0pXq6szy6e.01 Depending on how you have your site set up, this could sometimes cause a 404. I need an urgent fix for this on my sites.