Why is it that I have to press "back" several times on my browser when I am on imgur.com before something happens?

I have this problem with Internet Explorer (at work, yeah I hate it too) and Chrome (at home). Everytime I click a link that refers to imgur.com and I want to get back, the back button only reloads the page and I have to click it for about 10 times before I actually get back to the prior page.