To rectify this problem go to Internet Options, Security tab, and add http://googleads.g.doubleclick.net to the blocked site list, works for me. I have also added http://assets.pinterest.com/pidjet.html and http://tag.mediashakers.hiro.tv/iframes which also seems to cause similar problems. This may or may not be the source of your problem but this particular issues affects a high volume of users.

There are other addresses that act in the same way, if it does not go back, right click the back arrow button and add any weird looking addresses to the restricted site list as well. The addresses will be obvious and more appear all the time.